Backlight system and method for controlling the same

A technology of backlight system and control method, applied in optics, nonlinear optics, instruments, etc., can solve the problems of increased cost and high price
CN1558276AInactive Publication Date: 2004-12-29AU OPTRONICS CORP
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
AU OPTRONICS CORP
Publication Date
2004-12-29
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The present invention is back light system and its control method. The brightness signal of the light emitting module in the back light system is compared with preset brightness signal, and is regulated based on the comparison result to make the brightness signal of the light emitting module equal to the preset brightness signal. Where, the preset brightness signal changes with the temperature of the light emitting module to limit the back light brightness and the chroma within some stable range.
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Description

technical field

[0001] The present invention relates to a backlight system and a control method thereof, in particular to a backlight system composed of light emitting diodes (Light Emitting Diode; LED) and a control method thereof. Background technique

[0002] With the improvement and improvement of the display manufacturing technology, the liquid crystal display (Liquid Crystal Display, LCD) with the characteristics of small size and low radiation has gradually replaced the traditional cathode ray tube (Cathode Ray Tube, CRT) display in recent years.

[0003] Generally speaking, the backlight module (Back Lighting Module) of the traditional liquid crystal display mostly adopts the cold cathode fluorescent tube (Cold Cathode Fluorescent Lamp, CCFL) as the light source, but because the cold cathode fluorescent tube (CCFL) has the problem that it is difficult to start at low temperature, so A heater needs to be installed in a cold place, and there must be enough idling time ...

Claims

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