Light guide system, lateral type backlight module and liquid crystal display (LCD)

Abstract

The invention discloses a light guide system, a lateral type backlight module and a liquid crystal display (LCD). The light guide system comprises an ambient light collecting system, a plurality of light guide devices and at least two light guide bars. The ambient light collecting system faces towards ambient light, absorbs the ambient light and generates absorbed light. Each light guide device is provided with a light inlet end and a light outlet end, the light inlet end is close to the ambient light collecting system, and the absorbed light enters the light inlet end and is guided to the light outlet end. Each light guide bar comprises a light outlet lateral face, a light inlet lateral face and a second lateral face, wherein each light inlet lateral face is connected with the corresponding light outlet lateral face, and each second lateral face is opposite to the corresponding light inlet lateral face. The light outlet lateral faces are close to a light inlet face of a light guide panel, the second lateral face of a first light guide bar is arranged opposite to that of a second light guide bar, one part of the light outlet ends of the light guide devices are close to the light inlet lateral face of the first light guide bar, and the other part of the light outlet ends of the light guide devices are close to the light inlet lateral face of the second light guide bar.

Description

technical field [0001] The invention belongs to the field of liquid crystal display, and in particular relates to a light introduction system, a side-entry backlight module and a liquid crystal display. Background technique [0002] At present, the backlight source used in the backlight module of the TFT-LCD display is the common light-emitting diode (LED) or fluorescent tube, both of which use electricity as the driving energy source for light emission. However, in the entire backlight module The energy consumption of its backlight light source accounts for about 80%, and its energy consumption is very huge under long-term use. The currently used power generation categories are mainly divided into petroleum combustion power generation, coal combustion power generation and nuclear power generation, which will bring about environmental problems such as greenhouse effect and nuclear pollution. [0003] Ambient light in nature, such as sunlight, is a green and environmentally ...

AI Technical Summary

Problems solved by technology

[0005] The main problem with the structure of the above-mentioned side-entry backlight module is that the light-emitting angle of the light-emitting end 21 of the optical fiber 20 is relatively small (usually within 60 degrees), and the light-emitting ends 21 of multiple optical fibers 20 are adjacent to the light-incoming surface of the light guide plate 30 31, if the distance between two adjacent light emitting ends 21 is large, there will be obvious uneven brightness and darkness on the light incident surface 31 of the light guide plate 30, thereby affecting the optical quality of the backlight module.

If the distance between two adjacent light-emitting ends 21 is reduced, it means that more optical fibers 20 need to be used, which will increase the cost and difficulty of manufacture

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