Power supply topologies for liquid crystal display screen

Abstract

A method according to one embodiment may include generating, by a controller, a plurality of control signals to control operations of inverter circuitry to generate an AC signal from a DC signal. The method of this embodiment may also include using the control signals generated by the controller to also control operations of power factor correction (PFC) circuitry, via the inverter circuitry, to enable the PFC circuitry to generate power factor correction of an input source coupled to the PFC circuitry and the inverter circuitry. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.

Description

technical field [0001] The present disclosure relates to power topology in liquid crystal displays. Background technique [0002] In the traditional liquid crystal display (LCD) screen power supply structure, there are independent power factor correction (PFC) circuits and inverter circuits for input power factor correction and DC / AC inverter operation. In a conventional power supply, the operating frequency of the PFC circuit is different from that of the inverter circuit. Therefore, a conventional power supply may require one stage for power factor correction and another stage for inverter operation, each controlled by a separate controller. Moreover, conventional PFC circuits additionally require one or more switches, thus requiring other power circuit components. Therefore, the implementation of conventional power supply structures may have the disadvantage of being complex and expensive. Contents of the invention [0003] An embodiment discussed herein may provide ...

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