Patent ID: 7924501
Filing Date: 2011-04-12
Classification: G02B

Abstract:
1. An antireflection film comprising a first layer, a second layer, a third layer, a fourth layer, a fifth layer, a sixth layer, and a seventh layer; each of the first layer, the third layer, the fifth layer, and the seventh layer being formed using a low refractive index material; each of the second layer, the fourth layer, and the sixth layer being formed using a high refractive index material; the thicknesses of the first layer, the second layer, the third layer, the fourth layer, the fifth layer, the sixth layer, and the seventh layer being in ranges of 0.122d 1 to 3.052d 1 , 0.267d 2 to 0.370d 2 , 0.427d 3 to 0.610d 3 , 0.760d 4 to 0.924d 4 , 0.305d 5 to 0.378d 5 , 0.575d 6 to 0.718d 6 , and 1.160d 7 to 1.342d 7 , correspondingly, wherein d i =λ/(4×n i ), (i=1, 2, . . . 7), n i is a refractive index of the i-th layer, and λ is a reference wavelength of incident light entered into the antireflection film.