Back light module

Abstract

The invention discloses a back light module comprising a light guide plate, at least one separation type light source and a plurality of reflection sheets. The light guide plate is provided with at least one light entering surface and at least one light exiting surface which are vertical to each other; the at least one separation type light source is used for irradiating the light entering surface of the light guide plate; and the reflection sheets are arranged on the light entering surface and are adjacent to the separation type light source. For the back light module, the reflection sheets are arranged in a dark band zone of the light entering surface of the light guide plate of the back light module, and the reflection sheets generate reflection by light beams in the dark band zone so that rays of light are uniformly shot from the light exiting surface of the light guide plate so as to solve the problem of light dark bands of the back light module.

Description

technical field [0001] The invention relates to the technical field of a backlight module, in particular to a side-illuminated backlight using a separate light source. Background technique [0002] Today's liquid crystal display (liquid crystal display, LCD) is more and more popular, and gradually replaces the traditional cathode ray tube display (cathode ray tube display, CRT display). In comparison, liquid crystal displays have the characteristics of low power consumption, less heat generation, light weight, thin body, and non-radiation. Therefore, liquid crystal displays are often used in many modern electronic products, such as notebook computers, monitors, televisions, personal mobile phones or digital assistants (PDAs), etc. [0003] However, the liquid crystal display itself does not have the function of emitting light, and a backlight module is required to implement the light emitting function of the liquid crystal display. The structure of the backlight module inc...

AI Technical Summary

Problems solved by technology

Since the setting of the reflective wall 9 will cause too much space occupation, and the above structure is only applicable to small backlight modules, there will still be a problem of bright and dark bands in the middle area of ​​the light source in large backlight modules (hot spot mura)

[0009] To sum up, although the current prior art can provide a side-illuminated backlight module with sufficient luminance and uniform luminance as a light source, it has the disadvantage that the heat source is not easy to dissipate and the temperature will affect the life of the light source, and its manufacturing process is not easy to cause Disadvantages of increased production costs

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