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Control method of back light module unit and control driving mchanism thereof

A technology of a backlight module and a control method, which is applied to instruments, static indicators, etc., can solve the problems of poor display effect of liquid crystal display devices, and achieve the effect of strengthening the display effect.

Inactive Publication Date: 2007-12-05
GIGNO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when the type of the control signal matches the change of the video content, its frequency, amplitude or duty cycle changes suddenly, causing the frequency, amplitude or duty cycle of the light source flicker to also change suddenly, so the viewer can easily perceive the screen of the liquid crystal display device. Flickering, making the display effect of the liquid crystal display device worse

Method used

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  • Control method of back light module unit and control driving mchanism thereof
  • Control method of back light module unit and control driving mchanism thereof
  • Control method of back light module unit and control driving mchanism thereof

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Embodiment Construction

[0044] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation of the backlight module control method and its control drive device according to the present invention will be described below in conjunction with the accompanying drawings and preferred embodiments. , method, step, structure, feature and effect thereof, detailed description is as follows.

[0045] Generally speaking, the backlight module has a light box, at least one light-emitting element, a control circuit and a driving circuit. The light-emitting element is placed in the light box. If the light-emitting element is a CCFL, the driving circuit is usually an inverter.

[0046] Please refer to FIG. 2 , which is a flowchart of a driving method of a backlight module according to a preferred embodiment of the present invention. A method for controlling a backlight module according to a preferred embodiment of th...

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Abstract

The invention discloses a controlling method and control driving device of aphototropism module with driving circuit and at least one luminous element, which comprises the following steps: controlling the driving circuit through the first patterned control signal in front of the first time; driving the luminous element according to the first patterned control signal through driving circuit; controlling the driving circuit through switching modulating signal between the first and second time points to modulate the switching pattern to drive the luminous element according to the second patterned control signal. The control driving device of the aphototropism module consists of control circuit and driving circuit. The invention can avoid sudden change of light source flicker frequency, flicker time or strength due to suddenly changed control signal frequency, responsible period or amplitude, which maintains the same image brightness to reinforce the display effect.

Description

technical field [0001] The present invention relates to a method and device for controlling a backlight module, in particular to a method capable of avoiding a sudden change in the frequency, duty cycle or amplitude of a control signal resulting in a sudden change in the flickering frequency, flickering time or intensity of a light source, so that the screen brightness The control method and control driving device of the blinking backlight module can maintain the same and enhance the display effect. Background technique [0002] Flat panel displays, such as liquid crystal displays, etc., do not have the ability to emit light automatically, so they need to be operated with a light source. However, the liquid crystal display is not an impulse display, so it is easy to produce afterimage when displaying dynamic video. In order to produce the display effect of an impulsive display such as a cathode ray tube (CRT) display, the light source of the liquid crystal display flickers ...

Claims

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Application Information

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IPC IPC(8): G09G3/34G09G3/36G09G3/20G02F1/133
Inventor 林峰立
Owner GIGNO TECH CO LTD
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