Low-power back illuminating light component

Abstract

The invention relates to a low-power backlight component, including a light guide board, a tube and a reflection sheet. The light guide board is of a sheet structure composed of a bottom surface, a top surface and four side surfaces, where the top and bottom surfaces of the four side surfaces are mutually vertical, and the tube is on a side surface of the light guide board and guides the light into the light guide board. The reflection sheet is on the bottom surface of the light guide board and can reflect the incident light into the light guide board, making the light which is guided into the light guide board outgo from the top surface of the light guide board. It coats at least one of the top surface, and the bottom surface / four side surfaces with a layer of fluorescent agent to form a fluorescent layer, where the fluorescent agent can absorb the incident light to make the light stay for a short time and then outgo outwards. Therefore, it has better intensifying property and homogeneous degree, able to reduce the power consumption of the tube.

Description

technical field [0001] The invention relates to a backlight assembly of a liquid crystal display, in particular to a low-power backlight assembly. Background technique [0002] With the rapid progress of thin-film liquid crystal display (TFT-LCD) production technology, and its advantages of lightness, lightness, power saving, and radiation-free, liquid crystal displays are widely used in personal digital assistants (PDAs), notebook computers, digital Cameras, camcorders, mobile phones and other electronic products. Coupled with the industry's active investment in research and development and the adoption of large-scale production equipment, the quality of liquid crystal displays has been continuously improved, and the price has been continuously reduced, so that the application fields of liquid crystal displays have rapidly expanded. However, since the liquid crystal display is a non-luminescent display device, it needs a backlight assembly to produce a display function. ...

AI Technical Summary

Problems solved by technology

Although the diffuser can increase the uniformity of light, it can also produce light shading and affect the brightness of the backlight assembly

Usually, one diffuser will block 30% of the light source, which means that the brightness of the light source after passing through the diffuser will only be 70% of the original. If two diffusers are used, more than half of the light source brightness will be blocked. The brightness of the liquid crystal display is greatly affected, so if you want to obtain sufficient brightness for the liquid crystal display without sacrificing the uniformity of the liquid crystal display, you must increase the output power of the backlight assembly to increase the current of the lamp tube, but this will not only It will increase the power consumption of the backlight component, and will also increase the internal temperature of the backlight component, which will affect the operating performance of its internal electronic components.

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