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Inverter circuit for lightening backlight of LCD

A technology of liquid crystal display and inverter, applied in static indicators, instruments, etc., to achieve the effects of prolonging working life, preventing damage, and constant power output

Inactive Publication Date: 2017-04-19
肖斌
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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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  • Inverter circuit for lightening backlight of LCD

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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 a kind of inverter circuit for lighting the backlight of a liquid crystal display provided by the present invention, including an AC-DC conversion circuit module, a circuit module for filtering useless bands, a DC-AC inverter circuit module, and an output device electrically connected in sequence , the inverter circuit for lighting the backlight of the liquid crystal display also includes an electromagnetic filter circuit used to suppress the pollution of the power grid by the high-frequency current harmonics, so as to improve the power factor, reduce the harmonics, and realize constant power output The power factor adjustment circuit is used to prevent the abnormal state from causing damage to the electronic tube. The electromagnetic filter circuit is connected between the voltage input terminal and the AC-DC conversion circ...

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Abstract

The invention discloses an inverter circuit for lightening the backlight of an LCD. The inverter circuit comprises a camera display. A bus is formed by a setter, a central controller, a driver monitor and a door edge display. The setter and the door edge display are respectively arranged on the front door and the rear door of the bus. Electric tubes are added on the central controller and the driver monitor, so that the central controller processes the received information and transmits to the door edge display and the driver monitor. A driver notifies passengers to get off the bus or control the movement of the vehicle through the camera display. At least two buttons are arranged on the setter, and lighting electric tubes and sensors are built in the buttons. Number and station setting integrated device is arranged on the central controller, and transmitted to the door edge display and the driver monitor. The door edge display is provided with a liquid display screen, and a digital device is arranged on the driver monitor to serve as a communication device between passengers and the driver. The inverter circuit is simply structured, convenient and practical and is low in cost.

Description

technical field [0001] The invention relates to an inverter circuit for lighting the backlight of a liquid crystal display, in particular to an inverter circuit for lighting the backlight of a liquid crystal display used in a fluorescent lamp. 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 band filter circuit module, the DC-AC inverter circui...

Claims

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Application Information

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IPC IPC(8): G09G3/34
CPCG09G3/3406
Inventor 肖斌
Owner 肖斌
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