Light guide plate, backlight source and illuminating device

Abstract

The invention is suitable for the field of illumination, and provides a light guide plate, a backlight source and an illuminating device. The light guide plate is made of ultra-white glass and is provided with at least one light incident surface for receiving light beams, a bottom surface connected with the light incident surface and a light-emitting surface opposite to the bottom surface, wherein the light-emitting surface is used for guiding light in the light guide plate out; in the ultra-white glass, oxide glass of silicate glass, phosphate glass or borate glass or non-oxide glass of chalcogenide glass and halide glass is used as a matrix; the light-emitting surface of the light guide plate is a mirror surface or a rough surface; and pits or bulges are etched, carved or printed on the bottom surface of the light guide plate. In the invention, the ultra-white glass is used as the light guide plate, the light-emitting surface of the light guide plate is used as the mirror surface or the rough surface, and a plurality of pits or bulges are formed on the bottom surface, so that the light emitted from the light-emitting surface of the light guide plate is distributed uniformly, and the light-emitting uniformity of the light guide plate is improved greatly.

Description

technical field [0001] The invention belongs to the field of lighting, and in particular relates to a light guide plate, a backlight source and a lighting device. Background technique [0002] With the development of flat panel display technology, the application scope of planar backlights is increasing, such as LCD backlights, planar backlights for lighting, backlights for indicator lights, etc., all of which require uniform planar backlights. The optical performance of the light guide plate, which is an important part of the edge-lit backlight, determines the light output effect of the entire backlight. [0003] Although light guide plates made of acrylic, polycarbonate (PC), and polymethyl methacrylate (PMMA) can meet the requirements to a certain extent, there are still great defects: (1) poor rigidity and relatively small area When it is large, it is easy to deform, especially for large-size backlights, the light unevenness caused by the deformation of the light guide ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a light guide plate, aiming to solve the problem of uneven light output from existing light guide plates

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