Abstract: A rollable display device, including a housing, a driving mechanism and a flexible bearing film which are provided in the housing, and a flexible display screen. The flexible bearing film is configured to rotate under the driving of the driving mechanism; a first end of the flexible display screen is fixed to the flexible bearing film, a second end of the flexible display screen is configured to extend out of the housing from an opening formed in the housing, and the flexible display screen can be rolled on the flexible bearing film and can be unfolded under the pulling of external force.

Abstract: A displaying device and an electronic device. The displaying device includes: a first housing, a second housing, a flexible screen, a supporting strip and a telescopic rod; first housing and second housing face each other, and the first housing is provided with an opening at a position facing the second housing; one end of flexible screen is winded inside first housing, and the other end protrudes out of opening and is fixed to second housing; one end of supporting strip is winded inside first housing, the other end protrudes out of opening and is fixed to second housing, and a portion of supporting strip that protrudes out of first housing clings to a bottom of flexible screen; and telescopic rod is disposed at a bottom of supporting strip, and one end of telescopic rod is fixed to first housing, and the other end is fixed to the second housing.

Abstract: Provided is a biochar-anaerobic membrane biological treatment system and process. The system mainly includes a reaction tank, a membrane module, a macroporous gas distribution device, low-temperature pyrolysis biochar. The application of the process to sewage treatment shows that: under the conditions that the hydraulic retention time is 3.2-7.2 h, the membrane flux is 12.0-17.8 L/m2/h, and the sludge concentration of 7.2-15.6 g/L, multiple objectives of promoting organic micropollutants (OMPs) biotransformation, accelerating methane production and strengthening membrane fouling control were achieved. The system improved OMPs removal efficiency by more than 20%, decreased membrane fouling rate by 50%, and reaching an organic matter removal efficiency of more than 86% at low temperature. The system and process solve the problems of poor OMPs removal efficiency, serious membrane fouling, and low methane yield at low temperature in the anaerobic membrane biological treatment system.

Abstract: A signal receiver includes a first transistor, a second transistor, a load circuit, an amplifying circuit and a load circuit. The first transistor has a first end receiving a power voltage, and a control end receive a first input signal. The second transistor has a first end receiving the power voltage, and a control end receiving a second input signal, wherein the first input signal and the second input signal are differential signals and transit between a first voltage and a reference ground voltage, the first voltage is larger than the power voltage. The load circuit is coupled to the first transistor and the second transistor. The amplifying circuit generates an output signal according a first signal on the second end of the first transistor and a second signal on the second end of the second transistor.

Abstract: A frequency locked loop circuit, comprising an operational circuit, a first impedance circuit, a second impedance circuit, a switching circuit and a frequency generation circuit. The operational circuit is configured to output an operational signal according to a voltage difference between a positive terminal and a negative terminal. The switching circuit is configured to periodically conduct the negative terminal to one of the first impedance node and the second impedance node, and periodically conduct the positive terminal to the other one of the first impedance node and the second impedance node. The frequency generation circuit is configured to periodically sample the operational signal to generate a sample signal to generate a clock signal. An operational frequency of the operational signal is an integer multiple of a sampling frequency of the frequency generation circuit.

Abstract: A bi-directional and multi-channel optical module incudes an encapsulation casing, a TOSA, a plurality of ROSAs and a plurality of optical folding elements. The TOSA is accommodated in the encapsulation casing. The TOSA includes a light emitting element and a thin film LiNbOx modulator, and a light receiving end of the thin film LiNbOx modulator is optically coupled with the light emitting element. The ROSAs are accommodated in the encapsulation casing. The ROSAs are configured to receive external optical signals propagating into the encapsulation casing. The optical folding elements are optically coupled with a plurality of light propagation ends of the thin film LiNbOx modulator, respectively, for changing a traveling direction of light emitted by the TOSA. Each of the optical folding elements is configured to enable one of the ROSAs share a fiber access terminal with the TOSA.

Abstract: An optical module configuration includes a circuit board and a transmitter optical subassembly. The circuit board includes an accommodation through opening. The transmitter optical subassembly includes a light emitting unit and a thin film LiNbOx modulator. The thin film LiNbOx modulator is optically coupled with the light emitting unit, and the thin film LiNbOx modulator is disposed in the accommodation through opening. The accommodation through opening allows placement of various thin film LiNbOx modulators supportive of different optical module specifications.

Abstract: A bidirectional optical module includes a TOSA, a ROSA and an optical filter. The TOSA includes a light emitting unit and a thin film LiNbOx modulator, and the thin film LiNbOx modulator is optically coupled with the light emitting unit. The ROSA is connected with the TOSA. The optical filter is provided for a fiber port which the TOSA shares with the ROSA.

Abstract: A multi-channel parallel optical communication module includes a casing having an airtight cavity, an optical communication assembly accommodated in the airtight cavity, and a temperature controller in thermal contact with the optical communication assembly. The optical communication assembly includes a plurality of optical communication units disposed at same level, and a number of the plurality of optical communication units is greater than four.

Abstract: A multi-channel light emitting module includes a base, at least one light emitting unit provided on the base, an optical modulation chip provided on the base, and an optical transmission component. The optical modulation chip includes an encapsulation structure and a thin film lithium niobate (LiNbOx) modulator provided in the encapsulation structure. The thin film LiNbOx modulator is optically coupled with the at least one light emitting unit, and the light emitting unit is provided outside the encapsulation structure. The optical transmission component is optically coupled with the thin film LiNbOx modulator.

Abstract: Embodiments for providing cooling airflow through electronic in two different directions is described. An airflow control louver system in an electronic device provides for cooling airflow to be efficiently routed through the electronic device in the two different directions which in turn allows for multiple installation configurations for electronic devices with high powered heat sensitive components.

Abstract: An optical module includes a housing, a plurality of active optical components and a path changer component. The housing has an airtight chamber. The active optical components are provided in the airtight chamber. The path changer component is provided in the airtight chamber, and the path changer component is configured to change an optical path of at least one of the active optical components.

Abstract: Related to an optical communication module, the optical communication module comprises a main body, an optical communication assembly and a second circuit board. The main body comprises a housing and a first circuit board disposed on the housing. The housing and the first circuit board together form an airtight cavity of the main body, and the first circuit board comprises two first electric interfaces. The optical communication assembly is accommodated in the airtight cavity and comprises a substrate, an optical communication element and a second electric interface. The optical communication element disposed on the substrate. One of the two first electric interfaces of the first circuit board is electrically connected to the second electric interface. The second circuit board comprises a third electric interface and the other one of the two first electric interfaces of the first circuit board is electrically connected to the third electric interface.

Abstract: A multi-channel light emitting module includes a base, at least one light emitting unit provided on the base, an optical modulation chip provided on the base, and an optical transmission component. The optical modulation chip includes an encapsulation structure and a thin film lithium niobate (LiNbOx) modulator provided in the encapsulation structure. The thin film LiNbOx modulator is optically coupled with the at least one light emitting unit, and the light emitting unit is provided outside the encapsulation structure. The optical transmission component is optically coupled with the thin film LiNbOx modulator.

Abstract: Embodiments for providing cooling airflow through electronic in two different directions is described. An airflow control louver system in an electronic device provides for cooling airflow to be efficiently routed through the electronic device in the two different directions which in turn allows for multiple installation configurations for electronic devices with high powered heat sensitive components.

Abstract: A signal receiver includes a first transistor, a second transistor, a load circuit, an amplifying circuit and a load circuit. The first transistor has a first end receiving a power voltage, and a control end receive a first input signal. The second transistor has a first end receiving the power voltage, and a control end receiving a second input signal, wherein the first input signal and the second input signal are differential signals and transit between a first voltage and a reference ground voltage, the first voltage is larger than the power voltage. The load circuit is coupled to the first transistor and the second transistor. The amplifying circuit generates an output signal according a first signal on the second end of the first transistor and a second signal on the second end of the second transistor.

Abstract: A multi-channel wavelength division multiplexing light emitting device includes a casing and an optical communication assembly accommodated in the casing. The optical communication assembly includes a substrate, a plurality of first light emitting units disposed on the substrate, a plurality of second light emitting units disposed on the substrate, a first wavelength division multiplexer, and a second wavelength division multiplexer. The first light emitting units are arranged to correspond with the first wavelength division multiplexer. The second light emitting units are arranged to correspond with the second wavelength division multiplexer.

Abstract: The present disclosure provides a high-flux sensor suitable for corrosion big data monitoring and a method of manufacturing the same. The sensor includes a first metal sheet, a second metal sheet and an insulating sheet therebetween. The two metal sheets are laminated. The metal sheets and the insulating sheet form a test piece group. A through hole is drilled in the test piece group.

Abstract: A multi-channel parallel optical communication module includes a casing having an airtight cavity, an optical communication assembly accommodated in the airtight cavity, and a temperature controller in thermal contact with the optical communication assembly. The optical communication assembly includes a plurality of optical communication units disposed at same level, and a number of the plurality of optical communication units is greater than four.

Abstract: A multi-channel wavelength division multiplexing light emitting device includes a casing and an optical communication assembly accommodated in the casing. The optical communication assembly includes a substrate, a plurality of first light emitting units disposed on the substrate, a plurality of second light emitting units disposed on the substrate, a first wavelength division multiplexer, and a second wavelength division multiplexer. The first light emitting units are arranged to correspond with the first wavelength division multiplexer. The second light emitting units are arranged to correspond with the second wavelength division multiplexer.