Reflection preventing layered product and optical member
A reflection preventing layered product is provided by laminating a high refractive index layer and a low refractive index layer, which has a refractive index lower than that of the high refractive index layer, in that order on a transparent plastic film, directly or through another layer. The low refractive index layer has a surface resistance of 1.0×10 10 ohm/square inch or less, a total light remittance of 94% or more, and a refractive index of 1.25-1.37. An optical member provided with the reflection preventing layered product is also provided. This optical member is preferably a polarizing plate with reflection preventing function used for a liquid crystal display. The reflection preventing layered product excels in transparency, mechanical strength, antistaticity, and reflection preventing characteristics.
1. A reflection preventing laminated body comprising a high refractive index layer and a low refractive index layer, which has a refractive index lower than that of the high refractive index layer, laminated in that order on a transparent plastic film directly or through another layer, wherein the high refractive index layer comprises conductive fine particles and at least one of an activated energy ray-curable resin and a heat-curable resin, and has a surface resistance of 5.0×10 9 ohm/square inch or less, and the low refractive index layer is made of an aerogel, and has a surface resistance of 1.0×10 10 ohm/square inch or less and a refractive index of 1.25 to 1.37, the reflection preventing laminated body having a total light transmittance of 94% or more.
2. The reflection preventing laminated body according to claim 1 , wherein the high refractive index layer comprises conductive fine particles and an activated energy ray-curable resin.
3. The reflection preventing laminated body according to claim 2 , wherein the conductive fine particles are fine particles of at least one of antimony pentaoxide and phosphorus-doped tin oxide.
4. The reflection preventing laminated body according to claim 1 , wherein the refractive index of the high refractive index layer is 1.55 or more.
5. An optical member comprising the reflection preventing laminated body according to claim 1 .
6. The optical member according to claim 5 , which is a polarizing plate with a reflection preventing function used for a liquid crystal display.
7. A liquid crystal display element comprising the polarizing plate with a reflection preventing function according to claim 6 .
8. The reflection preventing laminated body according to claim 1 , wherein the conductive fine particles are fine particles of at least one of antimony pentaoxide and phosphorus-doped tin oxide.
9. The reflection preventing laminated body according to claim 1 , wherein the low refractive index layer is laminated directly on the high refractive index layer.