Backlight module and display device
View Patent ↗The present invention provides a backlight module and a display device. The present invention splices a substrate on a reflection plate. The reflection layer can effectively replace the reflection plate in function because of a high reflectivity of the reflection layer on the spliced portion between the substrate and the reflection plate, which guarantees extension of light and lowers requirement for assembling precision.
1. A backlight module, comprising:
a substrate comprising a first via hole defined in the substrate;
a reflection plate disposed around the substrate;
a light emitting layer disposed on the substrate and comprising a second via hole defined in the light emitting layer and corresponding to the first via hole;
a backlight source disposed at an end of the reflection plate;
a light guide plate disposed on the reflection plate; and
a reflection layer disposed between the substrate and the light emitting layer;
wherein the substrate is connected to and staggered vertically with the reflection plate and the light guide plate and is substantially aligned with a boundary between the reflection plate and the light guide plate, and the reflection layer and the light emitting layer are connected to the light guide plate such that each of the substrate, the reflection plate, and the light guide plate is fixed to each of the substrate and the reflection plate such that the substrate, the reflection plate, and the light guide plate are mutually fixed together.
2. The backlight module as claimed in claim 1 , wherein
material of the reflection layer is high reflection white oil.
3. The backlight module as claimed in claim 2 , further comprising
a transparent film layer disposed on the light emitting layer and the reflection layer, wherein material of the transparent film layer is silicone; and
a diffusion film disposed on a side of the light guide plate away from the reflection plate.
4. The backlight module as claimed in claim 3 , wherein
a third via hole is defined in the diffusion film and corresponds to the second via hole.
5. The backlight module as claimed in claim 4 , wherein
a diameter of the third via hole is greater than a diameter of the second via hole; and
the diameter of the second via hole is equal to a diameter of the first via hole.
6. The backlight module as claimed in claim 2 , wherein
the light guide plate and the light emitting layer are arranged abreast, and a portion of the light guide plate is disposed on the reflection layer.
7. The backlight module as claimed in claim 2 , wherein
the light guide plate is disposed around the reflection layer.
8. The backlight module as claimed in claim 1 , wherein
an area of the light guide plate is greater than or equal to an area of the reflection plate.
9. The backlight module as claimed in claim 1 , wherein
the light emitting layer is a mini-light emitting diode (Mini-LED) light emitting layer and comprises a white light emitting unit, a red light emitting unit, a green light emitting unit and a blue light emitting unit.
10. A display device, comprising the backlight module as claimed in claim 1 ; wherein the display device further comprises a camera module disposed under the backlight module and corresponding to the first via hole.