Abstract: Disclosed is a hydrogen generator that prevents the reformate water from bypassing the evaporator in a hydrogen generator, and the occurrence of sudden temperature changes within an evaporation flow path. The hydrogen generator comprises: an evaporator that produces a mixed gas by mixing a raw material gas containing methane with water vapor; a reformer that changes the mixed gas into a hydrogen-containing gas through a steam reforming reaction; and a combustor that supplies heat to the evaporator and the reformer. The evaporator comprises: an inner cylinder; an outer cylinder enclosing the inner cylinder; and a middle cylinder that is inserted between the inner cylinder and the outer cylinder, and that defines a helical flow path between the inner cylinder and the outer cylinder, through which water supplied from the outside flows.

Abstract: A display apparatus includes a display panel, a panel substrate including a data line driver, a controller connected to the panel substrate, and a connection unit provided in the panel substrate. The controller selects M signal lines from N signal lines (M is a natural number satisfying M?N) in accordance with a frame rate of a video data, and transmits M-phase video data to the panel substrate via the selected M signal lines. The data line driver controls the switching circuits of the connection unit in accordance with the frame rate of the video data to connect the M signal lines via which the video data is transmitted, to the data lines, and sequentially selects the M data lines to supply each piece of the video data transmitted via the M signal lines to each pixel connected to the selected M data lines.

Abstract: Disclosed is a hydrogen generator that prevents the reformate water from bypassing the evaporator in a hydrogen generator, and the occurrence of sudden temperature changes within an evaporation flow path. The hydrogen generator comprises: an evaporator that produces a mixed gas by mixing a raw material gas containing methane with water vapor; a reformer that changes the mixed gas into a hydrogen-containing gas through a steam reforming reaction; and a combustor that supplies heat to the evaporator and the reformer. The evaporator comprises: an inner cylinder; an outer cylinder enclosing the inner cylinder; and a middle cylinder that is inserted between the inner cylinder and the outer cylinder, and that defines a helical flow path between the inner cylinder and the outer cylinder, through which water supplied from the outside flows.

Abstract: A display apparatus includes a display panel, a panel substrate including a data line driver, a controller connected to the panel substrate, and a connection unit provided in the panel substrate. The controller selects M signal lines from N signal lines (M is a natural number satisfying M?N) in accordance with a frame rate of a video data, and transmits M-phase video data to the panel substrate via the selected M signal lines. The data line driver controls the switching circuits of the connection unit in accordance with the frame rate of the video data to connect the M signal lines via which the video data is transmitted, to the data lines, and sequentially selects the M data lines to supply each piece of the video data transmitted via the M signal lines to each pixel connected to the selected M data lines.