Display device and its light emitting module and light guide plate

Abstract

The invention discloses a light emitting module which comprises a light-guiding plate, a plurality of light-guiding elements and a light emitting unit. The light-guiding plate can guide the light direction, and is provided with at least one incident plane and two opposite side faces. The light-guiding elements are arranged on one side face of the light-guiding plate, and when users observe in the direction perpendicular to one side face, each light-guiding element is a curve provided with at least one inflection point. The light emitting unit is arranged on the incident plane of the light-guiding plate. After light emitted by the light emitting unit enters the light-guiding plate, the light is guided out from one side face of the light-guiding plate in the form of staggered bright and dark shades after being guided through the light-guiding plate and the light-guiding elements. The invention further discloses a display device and the light-guiding plate.

Description

technical field [0001] The invention relates to a display device, a light emitting module and a light guide plate thereof. Background technique [0002] In recent years, due to continuous improvements in technology and materials of light emitting diodes (LEDs), the luminous efficiency of light emitting diodes has been greatly improved. Different from ordinary fluorescent lamps or energy-saving light bulbs, LEDs have the characteristics of low power consumption, long service life, high safety, short luminous response time and small size, so they are gradually used in lighting equipment, light boxes or light-emitting modules. Among them, the lighting equipment is, for example, indoor and outdoor lamps, flashlights, headlights and taillights of automobiles and motorcycles, or other lighting devices, and the light emitting module can be used as a backlight module of a display device or other purposes. [0003] Please refer to Figure 1A and Figure 1B As shown in FIG. 2 , they...

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Problems solved by technology

[0006] However, when the light L is emitted from the light-emitting surface O of the light guide plate 122 to the display panel 11, the light on the light-emitting surface O is in the form of oblique straight lines arranged alternately with bright and dark intervals. That is, black matrix, opaque, not shown in the figure), such as Figure 1C As shown in area A of ( Figure 1C The straight stripes M shown in the figure are formed by the light L passing through the light-shielding layer, and the oblique stripes N are formed by the light and dark staggered oblique straight light rays on the light-emitting surface O of the light guide plate 122), which will make the light emitted from the display panel 11 appear optically Interference fringes ( Figure 1C Only one interference fringe is marked in the area A, and the rest are not marked), that is, the phenomenon commonly known as moire (Moiré) occurs, resulting in a decrease in the display quality of the display device 1

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