Light guide plate

Abstract

The invention discloses a light guide plate. The light guide plate comprises an incidence face, reflection faces and an outgoing face, wherein the incidence face is arranged on one side of the light guide plate and is used for introducing a light source; the outgoing face is arranged on the upper surface of the light guide plate and is used for enabling light to be transmitted outward from the inner part of the light guide plate; the reflection faces are arranged on the other surfaces except the incidence face and the outgoing face on the light guide plate and are used for limiting the light in the light guide plate; and the outgoing face is provided with an outward convex light condensation structure. The light condensation structure is arranged on the outgoing face, and then the light, which is not received by a user before, is gathered to an angle range capable of being received by the user, so that the light utilization rate is improved and the loss of energy is reduced; the light guide plate also has the characteristic of moderate imaging effect, and other structures in a backlight module are also not influenced; and the light guide plate has good utilization effects and obvious economic benefits.

Description

technical field [0001] The invention relates to the field of liquid crystal displays (Liquid Crystal Display, LCD), in particular to a light guide plate in an LCD backlight module. Background technique [0002] In LCD imaging, because the liquid crystal itself does not emit light, the backlight unit (BLU) placed under the LCD needs to provide a backlight light source. After the bottom light source emits light, it passes through the upper liquid crystal to produce different images. Under normal circumstances, the user faces the device itself in the process of using it. When the brightness needs to be adjusted, the brightness can only be increased by increasing the luminous intensity. However, in practice, the power consumption of the backlight source is often the most power consumption of the device. In the serious part, increasing the luminous intensity will reduce the battery life of the device; on the other hand, the light emitted by the backlight source is emitted in all ...

AI Technical Summary

Problems solved by technology

Under normal circumstances, the user faces the device itself in the process of using it. When the brightness needs to be adjusted, the brightness can only be increased by increasing the luminous intensity. However, in practice, the power consumption of the backlight source is often the most power consumption of the device. In the serious part, increasing the luminous intensity will reduce the battery life of the device; on the other hand, the light emitted by the backlight source is emitted in all directions through the light-transmitting surface, and a large part of the light cannot be received by the user, resulting in waste

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