Patent ID: 11860476
Assignee: ENTIRE TECHNOLOGY CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 15:
16. The backlight module of claim 9, further comprising:
a dichroic filter film, located above the diffusion plate, which can transmit or reflect the light emitted by the light-emitting element according to different wavelengths, capable of reflecting red and green light, and providing blue light;
a color conversion layer, located above the dichroic filter film, the color conversion layer being an optical film containing Quantum Dots (QD) material or fluorescent materials that can convert part of blue wavelength light energy into red and green wavelengths in order to output white light as required;
at least one prism sheet, located above the color conversion layer, which can concentrate scattered light to improve the brightness of the central viewing angle; and
a dual brightness enhancement film (DBEF), located above the at least one prism sheet, which can further increase the brightness of the light as well as the range of viewing angles;
wherein, a reflective layer is provided on a top surface of the substrate.