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Redundant light bar driving circuit and method

A technology for driving circuits and light bars, applied in instruments, static indicators, etc., can solve the problems of low life and low reliability of LCD screens, and achieve the effect of solving low reliability and low life.

Pending Publication Date: 2019-12-13
深圳市荣越科技有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present invention provides a redundant light bar driving circuit, which aims to solve the problems of low reliability and low lifespan in the prior art LCD screen

Method used

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  • Redundant light bar driving circuit and method
  • Redundant light bar driving circuit and method

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Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0038] Such as figure 1 as shown, figure 1 It is a schematic structural diagram of a redundant light bar drive circuit provided by an embodiment of the present invention; the redundant light bar drive circuit includes: a power conversion circuit 2; a backlight drive controller 1; a light bar switch switching circuit 6; a current backtest circuit 7; and the dual redundant lamp group 5 connected to the power conversion circuit 2, the light bar switch switching circuit 6, and the current backtest circuit 7 respectively, and the dual redundant lamp group 5 can control switching; the power conversion c...

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Abstract

The invention is applicable to the technical field of light bar driving, and provides a redundant light bar driving circuit and method, and the redundant light bar driving circuit comprises a power conversion circuit; a backlight driving controller; a light bar switch switching circuit; a current back test circuit; and a dual-redundancy lamp bank which is connected with the power supply conversioncircuit, the lamp strip switch switching circuit and the current back test circuit respectively, and can be controlled to be switched; the power supply conversion circuit is respectively connected with the backlight driving controller, the light bar switch switching circuit and the current back test circuit, and the light bar switch switching circuit and the current back test circuit are respectively connected with the backlight driving controller. The problems of low reliability and short service life of a liquid crystal screen in the prior art are solved, and then high reliability and longservice life of the liquid crystal screen are achieved.

Description

technical field [0001] The invention belongs to the technical field of light bar driving, and in particular relates to a redundant light bar driving circuit and method. Background technique [0002] With the development of smart cities, outdoor high-brightness display devices are more and more widely used, and the most widely used ones are high-resolution and large-size LCD screens. Due to the high brightness of the outdoor environment, the LCD screen requires high power to drive the backlight in order to achieve high brightness, which leads to very high power density and temperature rise of the backlight strip. Thousands of lamp beads will be used in the large-screen LCD screen , as long as one is damaged, black bars will appear on the LCD screen, so how to achieve high reliability and long life brings a very big challenge. It can be seen that the liquid crystal screen in the prior art has the problems of low reliability and low lifespan. Contents of the invention [00...

Claims

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Application Information

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IPC IPC(8): G09G3/34
CPCG09G3/3406G09G2330/08
Inventor 范振华
Owner 深圳市荣越科技有限公司