Driving circuit and liquid crystal display (LCD) television

Abstract

An embodiment of the invention provides a driving circuit and a liquid crystal display (LCD) television and relates to the electronic technology field. In the prior art, cost for setting an electronic device of the driving circuit is high. By using the driving circuit and the LCD television of the invention, the above technology problem is solved. The driving circuit comprises a voltage input terminal, a coupling module connected with the voltage input terminal and a rectification module connected with the coupling module. The coupling module is used to receive a current according with a total working voltage of two power consumption modules from the voltage input terminal and convert to the current according with the working voltage of one power consumption module. The rectification module is used to input the current according with the working voltage of one power consumption module to the two power consumption modules which are connected in series respectively so as to provide power for the power consumption modules. The LCD television comprises the two power consumption modules and the driving circuit in the embodiment of the invention. The driving circuit is used to provide power for the power consumption modules. The each power consumption module is formed by one channel LED light bar or two or more channel LED light bars which are connected in series. The driving circuit and the LCD television of the invention are used to reduce the cost of the driving circuit.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a driving circuit and a liquid crystal television provided with the driving circuit. Background technique [0002] With the rapid development of electronic technology, the penetration rate of LCD TVs is getting higher and higher. The driving circuit is the power supply used in electronic equipment such as LCD TVs and LCD computers to supply power to their backlights. [0003] like figure 1 As shown, the backlight in the LCD TV is mainly an LED light bar, and the existing drive circuit for supplying power to the LED light bar includes an external power input terminal U, a boost module 40, a control module N, a rectifier module 20, and a filter module Co, the current sampling module 5 and the dimming module 7, wherein: [0004] The boost module 40 is used to obtain current from the input terminal U of the external power supply, and raise the obtained current to the voltage re...

AI Technical Summary

Problems solved by technology

[0013] Embodiments of the present invention provide a driving circuit on the one hand, and on the other hand provide a liquid crystal television set with the driving circuit, which solves the technical problem in the prior art that the cost of electronic equipment with the driving circuit is relatively high

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