Backlight module used for liquid crystal display

Abstract

The present invention discloses a backlight module used for a liquid crystal display. The backlight module comprises a light generation device and a light transmission device, the light generation device comprises at least one light source, the light transmission device comprises a cuboid substrate, the light source is disposed adjacent to the surface of any side of the cuboid substrate, a light exiting unit composed of a plurality of cup-shaped bodies is arranged on an upper surface of the cuboid substrate and comprises a light exiting face and a light entering face, each cup-shaped body is composed of a top face, a bottom face and reflection hook faces between the top face and the bottom face, the bottom faces overlap with the upper surface, the light exiting face is composed of all the top faces while the light entering face is composed of all the bottom faces, the top faces of adjacent cup-shaped bodies are connected while the bottom faces of adjacent cup-shaped bodies are not connected, the upper surface between adjacent bottom faces directly contacts with the air, the reflection hook faces are symmetric to a central axis of the corresponding cup-shaped body, and a contour line of each reflection hook face is formed by multiple line segments. The backlight module is applied into the liquid crystal display, can help to reduce the amount of coatings, and is simple to process and high in light energy utilizing rate.

Description

Technical field [0001] The invention relates to a liquid crystal display, in particular to a backlight module used for the liquid crystal display. Background technique [0002] Since the 1970s, liquid crystal displays have been used because of their low cost, high resolution, and bright colors. Now their applications are almost ubiquitous in electronic devices, from small-sized watches to large-sized TVs. The liquid crystal display developed to the present has high resolution, compact structure, high brightness and low cost. However, despite more than 40 years of development and progress, liquid crystal displays still have problems such as low light source usage, low resolution, and color shift due to the limitation of insufficient backlight sources. [0003] The liquid crystal in the liquid crystal display panel itself does not have light-emitting characteristics, and it uses a backlight module to provide a light source to achieve the display effect of the display. Usually the b...

AI Technical Summary

Problems solved by technology

However, the divergence angle of the light source is relatively large, and less than 10% of the energy that actually enters the light guide plate is used, resulting in a decrease in the efficiency of the entire display.

However, there will be some difficulties in the realization of this module, because the microprism is a disconnected individual, and so is the corresponding microlens array

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