Abstract: Provided is a light-emitting device for a display, and a method that includes light sources distributed on one or more strips, several light sources are arranged on each strip, and are electrically connected in a matrix manner, the number of rows and columns of the matrix are greater than 1, and each row and column of the matrix have a control line to receive a control signal; and a control unit that acquires a video signal to be provided to the display screen, from a signal source of the display screen, determines color and brightness of each light source according to the video signal, wherein each light source corresponds to a partial pixel area in the outermost periphery of a display area, and for each matrix, sequentially control each row or column of light sources in the matrix to emit light based on color and brightness within one light-emitting period.

Abstract: Provided is a light-emitting device for a display, and a method that includes light sources distributed on one or more strips, several light sources are arranged on each strip, and are electrically connected in a matrix manner, the number of rows and columns of the matrix are greater than 1, and each row and column of the matrix have a control line to receive a control signal; and a control unit that acquires a video signal to be provided to the display screen, from a signal source of the display screen, determines color and brightness of each light source according to the video signal, wherein each light source corresponds to a partial pixel area in the outermost periphery of a display area, and for each matrix, sequentially control each row or column of light sources in the matrix to emit light based on color and brightness within one light-emitting period.

Abstract: The present application relates to a system for controlling a lamp, a circadian lamp and a holiday lamp. The system for controlling the lamp includes: a timing module, configured to acquire information about local time; and a lamp control module, configured to control the lamp to operate in a color temperature control mode, wherein in the color temperature control mode, the lamp control module provides, on the basis of the information about the local time, the lamp with a control signal, the control signal is used to adjust the color temperature and/or brightness of the lamp.

Abstract: The present application relates to a system for controlling a lamp, a circadian lamp and a holiday lamp. The system for controlling the lamp includes: a timing module, configured to acquire information about local time; and a lamp control module, configured to control the lamp to operate in a color temperature control mode, wherein in the color temperature control mode, the lamp control module provides, on the basis of the information about the local time, the lamp with a control signal, the control signal is used to adjust the color temperature and/or brightness of the lamp.

Abstract: A method for producing a sintered R-iron (Fe)-boron (B) magnet, the method including: (1) producing a sintered magnet R1-Fe—B-M; (2) washing the sintered magnet using an acid solution and deionized water, successively, and drying the sintered magnet to yield a treated magnet; (3) mixing a heavy rare earth element powder RX, an organic solid powder EP and an organic solvent ET to yield a slurry RXE, coating the slurry RXE on the surface of the treated magnet, and drying the treated magnet to yield a treatment unit; and (4) heating, quenching, and then aging the treatment unit.

Abstract: A method for preparing an R—Fe—B based sintered magnet. The method includes: 1) preparing a R1—Fe—B-M alloy, pulverizing the R1—Fe—B-M alloy to yield a R1—Fe—B-M alloy powder, adding a heavy rare earth powder of R2 or R2X and subsequently adding a lubricant to the R1—Fe—B-M alloy powder and uniformly stirring to form a mixture, where R1 being Nd, Pr, Tb, Dy, La, Gd, Ho, or a mixture thereof; M being Ti, V, Cr, Mn, Co, Ga, Cu, Si, Al, Zr, Nb, W, Mo, or a mixture thereof; R2 being at least one from Tb, Dy, and Ho; X being at least one from O, F, and Cl; 2) pressing the mixture obtained in step 1) to form a compact, and sintering the compact in a pressure sintering device in vacuum or in an inactive gas atmosphere to obtain a magnet; and 3) aging the magnet obtained in step 2).

Abstract: A method for preparing an R—Fe—B based sintered magnet. The method includes: 1) preparing a R1—Fe—B-M alloy, pulverizing the R1—Fe—B-M alloy to yield a R1—Fe—B-M alloy powder, adding a heavy rare earth powder of R2 or R2X and subsequently adding a lubricant to the R1—Fe—B-M alloy powder and uniformly stirring to form a mixture, where R1 being Nd, Pr, Tb, Dy, La, Gd, Ho, or a mixture thereof; M being Ti, V, Cr, Mn, Co, Ga, Cu, Si, Al, Zr, Nb, W, Mo, or a mixture thereof; R2 being at least one from Tb, Dy, and Ho; X being at least one from O, F, and Cl; 2) pressing the mixture obtained in step 1) to form a compact, and sintering the compact in a pressure sintering device in vacuum or in an inactive gas atmosphere to obtain a magnet; and 3) aging the magnet obtained in step 2).

Abstract: A neodymium-iron-boron (NdFeB) magnet having gradient coercive force and its preparation method are disclosed. The NdFeB magnet includes at least two NdFeB material layers having different coercive force, including an exterior layer having high coercive force and at least a medial layer having low coercive force. The exterior layer is connected to the medial layer via a sintered layer along an orientation direction. The NdFeB magnet has high magnetic properties and high resistance to magnetism loss.