Back lighting module of liquid crystal display device

Abstract

This invention relates to one LCD aphototropism module set, which comprises at least one light source and one adjust unit, wherein, the light source has at least one light diode and second diode; when first one lights, the second diode lights in first section and senses first diode light intensity in second section to generate one sensor signal; the light adjust unit is connected to first and second diodes to receive sensor signals and to adjust one light diode light intensity.

Description

technical field [0001] The invention relates to a backlight module, in particular to a backlight module of a liquid crystal display device which enables the brightness of the backlight module to be accurately controlled. Background technique [0002] Because the liquid crystal display device is light, thin and short, it can attract the attention of many consumers in the consumer market. A conventional liquid crystal display device mainly includes a liquid crystal display panel and a backlight module, wherein the backlight module provides a light source for the liquid crystal display device, and most of them use CCFLs as the light source. However, because light emitting diodes (LEDs) have better performance compared with cold cathode fluorescent tubes, some manufacturers also replace cold cathodes with light emitting diodes in backlight modules of liquid crystal display devices. The fluorescent tube is used as the light source of the backlight module. [0003] The conventio...

AI Technical Summary

Problems solved by technology

Since the luminous intensity of light emitting diodes is easily attenuated by the influence of manufacturing process and temperature or by the influence of time, and the attenuation degree of each light emitting diode is not the same, therefore, if the liquid crystal display device uses light emitting diodes as the backlight module When the light source is used, the liquid crystal display device will have the problem of color shift with temperature changes and use time

[0004] It can be seen that the above-mentioned existing backlight module obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently.

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