Backlight source and display device
The present disclosure relates to the field of display technology, and provides a backlight source and a display device, which address the problem that the misalignment readily occurring between the LED strip and the light guide plate results in a light leakage in the light-emitting diodes and hence a reduced performance of the display device. A backlight source comprises a scattering substrate and a light-emitting diode strip, wherein the light-emitting diode strip comprises a circuit board and light-emitting diodes arranged at intervals on the circuit board, and the scattering substrate comprises recesses at a surface corresponding to the light-emitting diode strip, the recesses corresponding one-to-one with the light-emitting diodes, the light-emitting diodes embedded into the recesses. A display device comprises the backlight.
1. A backlight source, comprising:
a light-emitting diode strip comprising a circuit board and light-emitting diodes arranged at intervals on the circuit board; and
a scattering substrate comprising recesses at a surface corresponding to the light-emitting diode strip, the recesses corresponding one-to-one with the light-emitting diodes, each of the light-emitting diodes being embedded into a respective one of the recesses,
wherein the scattering substrate comprises a connecting piece on which the recesses are formed, the connecting piece being fixed to the rest of the scattering substrate through adhesive.
2. The backlight source of claim 1 , wherein each region of the scattering substrate between every two neighboring recesses is fixed to the circuit board.
3. The backlight source of claim 2 , wherein the light-emitting diodes are not in contact with the recesses.
4. The backlight source of claim 2 , wherein the scattering substrate is fixed to the circuit board by an adhesive layer.
5. The backlight source of claim 1 , wherein the light-emitting diode strip is located at a side surface of the scattering substrate to form an edge-lit backlight.
6. The backlight source of claim 1 , wherein the light-emitting diode strip is located at a lower surface of the scattering substrate to form a bottom-lit backlight.
7. The backlight source of claim 1 , wherein the scattering substrate comprises one of a light guide plate and a display substrate with a scattering function.
8. A display device comprising the backlight source as recited in claim 1 .
9. The display device of claim 8 , wherein the light-emitting diode strip is located at a side surface of the scattering substrate, and the scattering substrate is provided with scattering microstructures on a lower surface.
10. The display device of claim 9 , wherein the scattering microstructures comprise one of bumps and grooves.
11. The display device of claim 10 , wherein the scattering microstructures comprise grooves that are filled with material having a refractive index that is different than a refractive index of the scattering substrate.
12. The display device of claim 9 , wherein the scattering substrate is further provided, at the lower surface, with a reflective layer covering the scattering microstructures.
13. The display device of claim 8 , wherein the scattering substrate comprises a display substrate with a scattering function, and is provided with a display layered structure on an upper surface of the scattering substrate.
14. The display device of claim 13 , wherein the display layered structure comprises a polarizer layer.
15. The display device of claim 14 , wherein the polarizer layer comprises one of a polarizer that is adhered directly to the upper surface of the scattering substrate and a polarizing film that is formed over the upper surface of the scattering substrate.
16. The display device of claim 15 , wherein the polarizing film comprises a wire grating polarizing film.
17. The display device of claim 8 , wherein the scattering substrate is provided with a reflective layer at a side surface where no light-emitting diode strip is arranged.
18. The display device of claim 17 , wherein the light-emitting diode strip is located at one of:
a side surface of the scattering substrate, and the reflective layer is arranged at the other side surfaces of the scattering substrate where no light-emitting diode strip is arranged; and
a lower surface of the scattering substrate, and the reflective layer is arranged at all side surfaces of the scattering substrate.
19. The display device of claim 17 , wherein the reflective layer comprises one of a reflecting sheet that is adhered to the surface of the scattering substrate and a reflecting film that is deposited over the surface of the scattering substrate.