Patent ID: 7839061
Filing Date: 2010-11-23
Classification: H01J

Abstract:
1. A field emission display comprising: a pair of substrates; an electro emission elements provided for one of the pair of substrates; an electrode provided for the other of the pair of substrates; a phosphor layer in contact with the electrode; and an anti-reflection layer provided on an outer side of the other substrate, wherein the other substrate has light-transmitting property, wherein the anti-reflection layer has a plurality of hexagonal pyramid-shaped projections, wherein a first corner of a hexagonal base of one of the plurality of hexagonal pyramid-shaped projections is in contact with a first corner of a hexagonal base of an adjacent hexagonal pyramid-shaped projection, wherein a second corner of the hexagonal base of the one of the plurality of hexagonal pyramid-shaped projections is in contact with a second corner of the hexagonal base of the adjacent hexagonal pyramid-shaped projection, wherein the one of the plurality of hexagonal pyramid-shaped projections has a first portion having a first refractive index and a second portion having a second refractive index different from the first refractive index, wherein the first portion is closer to the other substrate than the second portion, and wherein the first refractive index has a closer refractive index to a refractive index of the other substrate than the second refractive index.