Phase inverter circuit used for lightening backlight of liquid crystal display and driving method thereof

A technology of a liquid crystal display and a driving method is applied in the field of an inverter circuit and its driving to achieve constant power output, prevent damage and prolong working life.

Inactive Publication Date: 2017-02-22
刘新梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This is only the protection of abnormal conditions. In terms of anti-overvoltage, suppressing surge current, prolonging the service life of lamps, multi-load linkage, improving power factor, reducing harmonics, and realizing constant power output, the existing lighting industry Electron tubes still have a lot of shortcomings

Method used

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  • Phase inverter circuit used for lightening backlight of liquid crystal display and driving method thereof

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Embodiment Construction

[0018] For a better understanding of the present invention, the following examples are used to illustrate.

[0019] refer to figure 1 , which illustrates an inverter circuit and its driving method for lighting the backlight of a liquid crystal display provided by the present invention, including sequential circuits

[0020] The connected AC-DC conversion circuit module, useless band filter circuit module, DC-AC inverter circuit module, and output device, the inverter circuit and its driving method for lighting the backlight of the liquid crystal display also include a function for suppressing high-frequency An electromagnetic filter circuit that pollutes the power grid with current harmonics, a power factor adjustment circuit that improves power factor, reduces harmonics, and realizes constant power output, and a protection circuit that prevents damage to electronic tubes caused by abnormal conditions. The converter circuit is connected between the voltage input terminal and ...

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PUM

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Abstract

The invention discloses a phase inverter circuit used for lightening backlight of a liquid crystal display and a driving method thereof. A shooting display, a bus, setting devices, a central controller, a driver monitor, and door side displays are provided. The front door and the rear door of the bus are respectively provided with the setting devices and the door side displays, and electron tubes are additionally disposed on the central controller and the driver monitor, and then the central controller is used to transmit the received information after being processed to the door side displays and the driver monitor. A driver can notify passengers of getting off by the shooting display or controlling the moving of the bus, and each of the setting devices is provided with at least more than two buttons. A luminescent electron tube and an inductor are disposed in each of the buttons. The central controller is provided with a device used for integrating a number and a station into one body, and then is used to transmit the number and the station to the door side displays and the driver monitor. The door side displays are provided with liquid crystal displays, and the driver monitor is provided with a digital device, and therefore a device used for communication between the passengers and the driver is provided. A structure is simple, use is convenient and practical, and cost is low.

Description

technical field [0001] The invention relates to an inverter circuit for lighting a backlight of a liquid crystal display and a driving method thereof, in particular to an inverter circuit for lighting a backlight of a liquid crystal display used in a fluorescent lamp and a driving method thereof. Background technique [0002] In the current lighting industry, the existing general-purpose electronic tubes are composed of electrical components such as power capacitors, normally closed thermal switches, and thermal resistance coils. This electronic tube has strong vibration noise and temperature rise, and has light flickering. When the power supply is turned on, the lamp cannot be lighted up quickly, and at the same time, due to the unstable voltage of the mains, the electronic tube and the lamp are easy to burn out, causing losses to the user. [0003] The new electronic tube has been improved in some parts. The circuit includes the AC-DC conversion circuit module, the useless...

Claims

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Application Information

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IPC IPC(8): H05B37/02
Inventor 刘新梅
Owner 刘新梅
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