The invention relates to a vehicle-mounted display screen power supply circuit and a vehicle-mounted display screen, and belongs to the field of vehicle-mounted display screens, the vehicle-mounted display screen power supply circuit comprises a DC-DC booster circuit, a reference voltage circuit, a VGH voltage doubling circuit and a VGL voltage doubling circuit, the output end of the DC-DC booster circuit is connected with the input end of the reference voltage circuit, and the output end of the VGH voltage doubling circuit is connected with the input end of the VGL voltage doubling circuit. The output end of the reference voltage circuit is used for being connected with a display screen, the VGH voltage doubling circuit and the VGL voltage doubling circuit are electrically connected with the DC-DC booster circuit and used for increasing the voltage output by the DC-DC booster circuit in a multiplied mode, the output end of the VGH voltage doubling circuit is used for being connected with the VGH end of the display screen, and the VGL voltage doubling circuit is used for increasing the voltage output by the DC-DC booster circuit in a multiplied mode. The output end of the VGL voltage doubling circuit is used for being connected with the VGL end of a display screen. The method has the effect of reducing the cost of the vehicle-mounted display screen.

    本申请涉及一种车载显示屏供电电路及车载显示屏,属于车载显示屏领域,其包括DC‑DC升压电路、基准电压电路、VGH倍压电路以及VGL倍压电路,所述DC‑DC升压电路的输出端与所述基准电压电路的输入端连接,所述基准电压电路的输出端用于连接显示屏,所述VGH倍压电路以及VGL倍压电路与所述DC‑DC升压电路电性连接,用于将所述DC‑DC升压电路输出的电压成倍抬升,所述VGH倍压电路的输出端用于连接显示屏的VGH端,所述VGL倍压电路的输出端用于连接显示屏的VGL端。本申请具有降低车载显示屏成本的效果。


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    Title :

    Vehicle-mounted display screen power supply circuit and vehicle-mounted display screen


    Additional title:

    一种车载显示屏供电电路及车载显示屏


    Contributors:
    ZHANG ZEMENG (author) / LIN TENG (author) / HUANG XULIN (author) / QIN ZISHAN (author) / CHEN BIWEI (author)

    Publication date :

    2024-12-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G09G Anordnungen oder Schaltungen zur Steuerung oder Regelung von Anzeigevorrichtungen mit statischen Mitteln zur Darstellung veränderlicher Informationen , ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION



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