A numerical and optimization study has been well performed on both the circadian effect and color gamut of laser-based displays (LBDs) consisted of multiple-primary laser diodes (LDs) to realize the ultra-wide color gamut. The LBDs mainly consist of red (R). green (G). and blue (B) LDs (namely by 3-LD scheme). https://www.roneverhart.com/HP-Victus-15-FA0031DX-15-6-FHD-IPS-Gaming-Laptop-Intel-Core-i5-12450H-3-3-GHz-GeForce-GTX-1650-8GB-DDR4-RAM-512GB-SSD/