Hot-pressed light guide plate with high mesh points, backlight, display device and preparation method

Abstract

The invention provides a hot-pressed light guide plate with high mesh points, a backlight, a display device and a preparation method. The hot-pressed light guide plate comprises a first surface and asecond surface which are opposite to each other, the second surface is provided with a mesh point area composed of a plurality of mesh points, the mesh point area enables light entering the light guide plate to be emitted from the first surface, the average height of annular crater forms of a mold core before hot-press transfer printing of the mesh points is 12-18 micrometers, and the proportion of the annular crater forms the average height of which is greater than or equal to 12 micrometers in the mold core per unit area is 70-100%. According to the hot-pressed light guide plate, under the condition of keeping the annular crater forms of the mold core complete, the mesh point height of the light guide plate is increased, the tolerance degree to the damage caused by tiny foreign matter which cannot be recognized by the human eyes is improved, and the hot-pressed light guide plate is used for reducing the problem of bright white spots or scratches.

Description

technical field [0001] The invention relates to the technical field of display devices, in particular to a hot-pressed light guide plate with high dots, a backlight source, a display device and a preparation method. Background technique [0002] The liquid crystal display itself does not emit light, so it needs a backlight to emit light, and the display quality of the liquid crystal display is closely related to the performance of the backlight. The quality of the backlight determines important parameters such as the brightness of the LCD screen, the uniformity of the picture, and the color scale, and largely determines the luminous effect of the LCD screen. A high-quality liquid crystal display means a high-quality backlight module, and the role of the light guide plate in the backlight module is very important. [0003] The light guide plate is used to guide the scattering direction of light to improve the control brightness and uniformity. Therefore, the design and manuf...

AI Technical Summary

Problems solved by technology

[0004] Among them, the hot-pressed light guide plate is currently an advanced process technology, but because the dot height is only about 2 μm, when assembling, there will always be tiny foreign objects that cannot be recognized by human eyes entering it during the process of assembling the backlight. The size exceeds the dot height. During the vibration test, which is to simulate road running and transportation, foreign objects between the light guide plate and the reflector will scratch the light guide plate and the reflector, resulting in conventional defects such as scratches, white spots, and white tops.

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