Dodging lens, backlight module using dodging lens and display device

Abstract

The invention provides a dodging lens, a backlight module using the dodging lens and a display device. The dodging lens comprises a containing part for containing a light source and a diffusion part, wherein a cavity chamber is internally arranged in the containing part; and a V-shaped slot is formed at the external surface of the diffusion part. The backlight module using the dodging lens comprises an optical film material and a light source device which is arranged at one side of the back surface of the optical film material; and the light source device comprises the dodging lens and a light source. The display device comprises the backlight module using the dodging lens. The dodging lens is different from a round second lens; the length of the dodging lens is determined according to different sizes; the shaping technology is simple; and the dodging effect is excellent. Because the backlight module using the dodging lens adopts the dodging lens provided by the invention, the light emitting effect is better, and the cost is greatly reduced. Because the display device adopts the backlight module provided by the invention, the quality of a product can be greatly improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a uniform light lens, a backlight module and a display device using the light uniform lens. Background technique [0002] The backlight module is one of the important components of the liquid crystal display. Since the liquid crystal itself does not emit light, the function of the backlight module is to supply sufficient brightness and evenly distributed light source, so that the liquid crystal display can display images normally. At present, the display technology of liquid crystal display has become mature, especially in the design of the backlight module. In addition to being used in liquid crystal display devices such as liquid crystal displays and liquid crystal televisions, backlight modules can also provide light sources for display devices such as digital photo frames, electronic paper, and mobile phones. [0003] The backlight module is divided into a side-type backlig...

AI Technical Summary

Problems solved by technology

Among them, many direct-type backlight modules use CCFL (cold cathode fluorescent lamp) as the light source, but although CCFL has a price advantage, it is forced to withdraw from the stage of history because it contains toxic mercury vapor.

[0004] At present, there is a research and development plan to replace CCFL with LED light strips in the market, but in order to make up for the shortcomings of the limited light-emitting angle of LEDs, it is necessary to add a circular secondary lens to diffuse and uniform light, but the price of this secondary lens is also quite expensive.

Moreover, the circular secondary lens is a one-to-one match with the LED lamp. Therefore, as the number of LED lamps increases, the number and cost of the secondary lens will increase.

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