Lateral backlight module, display and light guide plates

Abstract

The invention discloses a lateral backlight module, a display and light guide plates. The lateral backlight module comprises at least two stacked light guide plates, each light guide plate comprises a light emergent surface, a bottom surface and at least one light incident surface, and the bottom surface of the upper light guide plate is opposite to the light emergent surface of the lower light guide plate; light sources are arranged at the light incidence surface of each light guide plate and independent of one another; light emergent zones and total reflection zones are alternately arranged on each light guide plate in the light ray spreading direction of the light sources, and light emitted by the light sources is totally reflected in the total reflection zones; the light emergent zones of each light guide plate of the at least two light guide plates correspond to the total reflection zones of the adjacent light guide plate. With the adoption of the light guide plate structures, the display subzones of the lateral backlight module can be increased, and the dynamic contrast ratio of the lateral backlight module can be increased.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display panels, in particular to a side-entry backlight module, a display and a light guide plate. Background technique [0002] Liquid crystal displays have gradually become an important role in consumer electronics products, and are widely used in displays of devices such as mobile terminals with high-resolution color screens. As people's visual experience requirements are getting higher and higher, the display quality requirements of liquid crystal displays are also getting higher and higher. Therefore, high dynamic contrast technology has gradually become a development trend. The dynamic contrast ratio of the display is basically close to the contrast ratio of a single imaging of the human eye. , so that the resolution of bright and dark states of the display is improved. [0003] The technology currently used is dynamic light splitting technology, which divides the display area and ba...

AI Technical Summary

Problems solved by technology

The commonly used backlight module is a direct-type backlight module, that is, a certain number of luminous body arrays are used to make the light guide plate form as many partitions as possible, so it has a better effect on the division of picture details and the control of brightness and darkness. However, since the direct-type backlight module has a certain size of the luminous body (such as LED, etc.), and the light-emitting angle has a certain diffusion characteristic, it needs a long light mixing distance to achieve uniform diffusion of light, resulting in the direct-type backlight module. The thickness is relatively thick, only suitable for displays that are not sensitive to thickness, and cannot be widely used in LCD displays

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