Back light module unit structure

Abstract

The present invention relates to a backlight module structure suitable for a direct illumination type or lateral backlight module, which comprises a plurality of light sources excited by mercury and a fluorescent film positioned on an outer side of the light source to absorb ultraviolet radiation and convert the ultraviolet radiation into visible lights, thus increasing utilization ratio of the light source. The present invention can also arrange a fluorescent film for an optical element or the optical element is mixed with a plurality of first fluorescent powder. Thus, the fluorescent film or the fist fluorescent power absorbs the ultraviolet radiation and converts the radiation to visible lights to increase utilization ratio of the light source and reduce backlight module element damage due long-time ultraviolet radiation.

Description

technical field [0001] The invention relates to an optical module structure, in particular to a backlight module structure. Background technique [0002] Most of the LCD screens of computers or TVs, mobile phone screens, and PDA screens in daily life, or the dashboard lights of automobiles and motorcycles, and aircraft navigation equipment, etc., are mostly equipped with backlight modules. It can be seen that backlight modules have been widely used in Various information and communication products. Common types of backlight modules are side-emitting backlight modules and direct-light backlight modules. Whether it is a side-emitting type or a direct-emitting type, the backlight module includes at least one light source, and the light source is mostly a cold cathode fluorescent lamp (Cold Cathode Fluorescent-Lamp, CCFL) or a light-emitting diode. [0003] Take cold cathode fluorescent lamps as an example. The cold cathode fluorescent lamp is a light source excited by mercur...

AI Technical Summary

Problems solved by technology

Although the ultraviolet light is absorbed by the fluorescent powder on the inner wall of the lamp tube and emits light, part of the ultraviolet light still penetrates the wall of the lamp tube

If the components in the backlight module are exposed to ultraviolet rays for a long time, these components will deteriorate and be damaged

Moreover, in the process of emitting light from cold cathode fluorescent tubes, most of the electric energy cannot be converted into, and most of the other parts of electric energy are converted into heat energy for release, and the conversion efficiency of adding phosphors to convert ultraviolet light into white light is low. Cathode fluorescent tubes are not very efficient

Furthermore, the color saturation of the light emitted by CCFLs is low, so the color saturation of the backlight module is not necessarily high.

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