Semiconductor laser backlight module and liquid crystal display

Abstract

The embodiments of the invention disclose a semiconductor laser backlight module and a liquid crystal display. The semiconductor laser backlight module includes a laser light source module, an opticalfiber light homogenizing module, an optical fiber output module and a light guide plate. The laser light source module includes multiple sub-light source groups for outputting a white laser that meets a preset light brightness and a target color temperature value. Sub-optical fiber bundle groups of the optical fiber output module receive white sub-light beams after light homogenizing by the optical fiber light homogenizing module of the corresponding sub-light source groups, form output light beams of adjacent optical fibers from different sub-light source modules and optical fiber output endfaces which are arranged in a line-shaped manner according to a preset optical fiber arrangement mode, and finally are performed butt joint optical coupling with the light guide plate. The semiconductor laser backlight module and the liquid crystal display solve the problem of poor color expression of an LED backlight module, greatly improves the uniformity of the laser backlight illumination inthe light guide plate, significantly reduces interference fringes and speckle effect, and is of great significance for promoting the popularization of the laser liquid crystal display technology.

Description

technical field [0001] Embodiments of the present disclosure relate to the technical field of liquid crystal display, and in particular, to a semiconductor laser backlight module and a liquid crystal display. Background technique [0002] With the rapid development of information display technology, liquid crystal display technology is widely used in large and medium-sized screen hardware such as TVs, desktop computer monitors, notebook computers, and tablet computers due to its unique excellent characteristics (such as low voltage, micro power consumption, flat-panel structure, etc.) in the device. [0003] The backlight module of LCD usually uses LED (Light Emitting Diode, light-emitting diode) as the backlight source. Since the LED spectrum is a continuous spectrum, the three primary color pixels rely on the traditional RGB three-color broadband filter in the liquid crystal display panel. Therefore, the primary color light The saturation is not high, resulting in the lim...

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Problems solved by technology

[0005] The embodiment of the present disclosure provides a semiconductor laser backlight module and a liquid crystal display, which solves the problem of poor color performance of the LED backlight module, greatly improves the uniformity of laser backlight illumination in the light guide plate, and significantly reduces interference fringes and speckles. effect, which is of great significance to promote the popularization of laser liquid crystal display technology

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