Backlight module, display module and mobile terminal

Abstract

The invention relates to the technical field of display technologies and discloses a backlight module, a display module and a mobile terminal. The backlight module comprises a rubber frame, light sources, a light guide plate, a reflection plate and a radiating plate, wherein the light sources, the light guide plate, the reflection plate and the radiating plate are mounted on the rubber frame; the light sources are adjacent to the light guide plate; the light exiting faces of the light sources face the light incidence face of the light guide plate; the reflection plate is mounted on the side, away from the light exiting face of the light guide plate, of the light guide plate; the projection of the reflection plate on the light guide plate covers the light guide plate and at most part of the light sources; the radiating plate is mounted on the side, away from the light guide plate, of the reflection plate; and the projection of the radiating plate on the light sources covers the light sources and at most part of the reflection plate. According to the backlight module, the problem that the lightening effect of the backlight module is dropped due to different thermal expansion coefficients of the radiating plate and the reflection plate can be solved while the radiating performance of the light sources is improved, and the reliability of backlight module products is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module, a display module, and a mobile terminal. Background technique [0002] At present, side-lit backlight modules are mostly used in the display modules of mobile terminals such as mobile phones. The light source generally adopts LED (Light Emitting Diode; Light Emitting Diode) light strips, and the LED light strips are installed in the backlight module during use. On the plastic frame of the LED light bar, the lower surface of the LED light bar and the two end faces perpendicular to the extending direction of the LED light bar are attached to the plastic frame, the light-emitting surface opposite to the lower surface is attached to the light guide plate of the backlight module, and the light-emitting surface is attached to the light-emitting surface. A flexible circuit board is bonded to the lower surface and the front whose two end surfaces are vertical, and th...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a backlight module, a display module, and a mobile terminal. While improving the heat dissipation performance of the light source, the backlight module can also improve the lighting of the backlight module caused by the difference in thermal expansion rate between the heat sink and the reflection sheet. Improve the reliability of backlight module products due to the problem of reduced effect

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