| 摘要 |
An optical reflective film and a light emitting device are provided. The optical reflective film includes a main body, organic particles, inorganic particles, and voids. The main body is made of polyolefin. A refractive index difference N of the optical reflective film is defined in the following equation, and its value ranges from 0.05 to 0.7: N = ( blr - alr ) × blc + ( clr - alr ) × clc + ( dlr - alr ) × dlc 100 In above equation, alr is refractive index of polyolefin, alc is weight percentage of the main body in the optical reflective film. blr is refractive index of the organic particles disposed in the main body, blc is weight percentage of the organic particles, clr is refractive index of inorganic particles disposed in the main body; clc is weight percentage of organic particles; dlr is refractive index of voids disposed in the main body, and dlc is the void ratio of optical reflective film.
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