Abstract: A foreign substance collection structure, a display device and an operation method thereof are provided. The foreign substance collection structure includes a frame and a first baffle plate. The frame includes a first inside wall, the first baffle plate is configured to move toward the first inside wall. The first baffle plate includes a first surface and is capable of being moved from a position away from the first inside wall to a position where the first surface of the first baffle plate faces the first inside wall; an adhesive layer is disposed on at least one of the first inside wall and the first surface, and the adhesive layer is configured to bond foreign substances appearing on the first inside wall and/or the first surface.

Abstract: There are provided a shift register unit and a driving method thereof. The shift register unit includes: an input circuit, whose first terminal receives an input signal of the shift register unit, and second terminal is connected to a pull-up node, the input circuit being configured to output the input signal to the pull-up node; an output circuit, whose first terminal is connected to a clock signal terminal, second terminal is connected to the pull-up node, third terminal is connected to an output terminal of the shift register unit, the output circuit being configured to output a signal of the clock signal terminal to the output terminal under the control of the pull-up node; a pull-up node control circuit, and the pull-up node control circuit being configured to discharge the pull-up node through third power supply voltage terminal under the control of a first power supply voltage terminal.

Abstract: A foreign substance collection structure, a display device and an operation method thereof are provided. The foreign substance collection structure includes a frame and a first baffle plate. The frame includes a first inside wall, the first baffle plate is configured to move toward the first inside wall. The first baffle plate includes a first surface and is capable of being moved from a position away from the first inside wall to a position where the first surface of the first baffle plate faces the first inside wall; an adhesive layer is disposed on at least one of the first inside wall and the first surface, and the adhesive layer is configured to bond foreign substances appearing on the first inside wall and/or the first surface.

Abstract: A LED strip, a backlight source unit and a display device are provided. The LED strip includes a circuit board, a plurality of LEDs provided on the circuit board, a film stack provided on the circuit board and covering the LEDs, the film stack being configured to convert the light emitted from the LEDs into a uniform surface light source.

Abstract: A system and a method for liquefying natural gas using single mixed refrigerant as refrigeration medium are provided. The system comprises a two-stage mixed refrigerant compressor (1) driven by a motor, two coolers (21, 22), a liquid pump (4), three gas-liquid separators (31, 32, and 6), two throttling devices (51, 52), a plate-fin heat exchanger group (7) and a LNG storage tank (8). The method comprises the following steps: the mixed refrigerant is compressed step by step by using the two-stage mixed refrigerant compressor (1), separated step by step, and gas-phase and liquid phase mixed refrigerant streams obtained from the separation flow into different passages of the heat exchanger group (7) respectively for throttling and heat exchanging. Heat exchange curves of cold fluid and hot fluid in the whole heat exchange process match with each other better by using two-stage heat exchange, thereby flow of the mixed refrigerant is reduced effectively.