Mini LED driving power supply and mini LED television

    公开(公告)号:US12131687B2

    公开(公告)日:2024-10-29

    申请号:US18044447

    申请日:2021-12-30

    IPC分类号: G09G3/32 H05B45/355

    摘要: A MINI LED driving power supply and a MINI LED television, the MINI LED driving power supply includes a power supply board connecting with a mainboard and a MINI LED screen, the power supply board includes a first conversion module and a second conversion module; the first conversion module outputs power supply voltage to power the mainboard after the first conversion module is turned on, outputs first voltage and second voltage to power the mainboard according to a power-on/off signal output by the mainboard, and outputs first power supply and high-voltage direct current to the second conversion module; the second conversion module converts high-voltage direct current into third voltage and outputs the third voltage to the MINI LED screen according to enable signal output by the mainboard and the first power supply, to light up MINI LED screen.

    OLED drive power supply and OLED television

    公开(公告)号:US11308871B2

    公开(公告)日:2022-04-19

    申请号:US17058323

    申请日:2019-06-28

    摘要: An OLED drive power supply includes a power supply board connected to a main board and OLED screen, the power supply board includes a power supply circuit, first conversion module, second conversion module and switch; after powering on, the power supply circuit starts the first conversion module to output high-voltage DC to second conversion module, output first voltage and second voltage to power main board, switch converts first voltage to first enabling voltage to power OLED screen; after preset time, main board outputs second enabling signal to power supply circuit, to control second conversion module to start and output second enabling voltage to power and light OLED screen, first conversion module comprises bridgeless PFC circuit and auxiliary path LLC control circuit integrated into same semiconductor chip encapsulation, and omitting specific standby circuit, circuit structure is simplified, area of power supply board is reduced, and production cost is reduced.

    Mini LED television control system and method

    公开(公告)号:US11303842B2

    公开(公告)日:2022-04-12

    申请号:US16970431

    申请日:2019-04-10

    IPC分类号: H04N5/63 G09G3/34 H04N5/57

    摘要: A mini LED television control system and method to reduce loss includes a power supply used for supplying power to a backlight board after a voltage is adjusted; a control board connected to the power supply, the control board including an FPGA used for detecting a current value and controlling a power supply output voltage, an analog-to-digital conversion chip used for collecting the voltages of sampling circuits, and a plurality of sampling circuits connected to a plurality of light boards and used for collecting voltages of the light boards; constant current ICs disposed on the light boards and used for providing light bar voltages and sending brightness information; and a mainboard connected to the control board and used for enabling and synchronizing backlight brightness signals. The control board converts brightness information sent by the mainboard and then sends the information to the constant current ICs on corresponding light boards.