Backlight module, display panel comprising same and electronic device

Abstract

The invention provides a backlight module, a display panel comprising the same and an electronic device. The backlight module comprises a light guide plate, a first low-refractive coating, a diffusion coating, a high-refractive coating, a second low-refractive coating, a Bragg reflective coating and light sources, wherein the light guide plate is provided with a light-exiting surface and a light-entering surface which are opposite to each other, the first low-refractive coating is arranged on the light-exiting surface of the light guide plate, the diffusion coating is arranged on the upper surface of the first low-refractive coating, the high-refractive coating is arranged on the upper surface of the diffusion coating, the second low-refractive coating is arranged on the light-entering surface of the light guide plate, the Bragg reflective coating is arranged on the lower surface of the second low-refractive coating, and the light sources are arranged on side faces of the light guide plate. According to the membrane-free backlight module with a plurality of coatings, the structure of the backlight module is greatly simplified, yield is improved, light loss is reduced, brightness is greatly improved, the thickness of the whole backlight module is only equal to that of the upper and lower coatings of the light guide plate, the backlight module can be ultra-thin, and pictures and quality of the display panel comprising the backlight module are improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular, to a backlight module, a display panel and electronic equipment containing the same. Background technique [0002] The backlight module is one of the key components of the LCD panel. The function is to supply sufficient brightness and evenly distributed light source so that it can display images normally. Currently, refer to figure 1 , the backlight module generally includes: a light-shielding tape, an upper diffusion sheet, an upper prism sheet, a lower prism sheet, a lower diffusion sheet, a light guide plate, a plastic frame and a reflection sheet, which includes multiple optical films, with a complex structure and a large thickness. And the preparation process is loaded down with trivial details. As the demand for thinner and lighter liquid crystal modules is getting higher and higher, traditional backlight modules are difficult to meet. [0003] Therefore, the current bac...

AI Technical Summary

Problems solved by technology

Currently, refer to figure 1 , the backlight module generally includes: a light-shielding tape, an upper diffusion sheet, an upper prism sheet, a lower prism sheet, a lower diffusion sheet, a light guide plate, a plastic frame and a reflection sheet, which includes multiple optical films, with a complex structure and a large thickness. And the preparation process is cumbersome

As the demand for thinner and lighter liquid crystal modules is getting higher and higher, traditional backlight modules are difficult to meet

[0003] Therefore, the current backlight module still needs to be improved

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