Patent ID: 9354449
Filing Date: 2016-05-31
CPC Classification: G02B,G02F,H04N

Claim Text:
1. An image display device comprising: a display panel having a plurality of pixels disposed in a matrix; and a liquid crystal lens disposed on a display surface side of the display panel, wherein the pixels of the display panel are divided into a plurality of pixel groups each including two or more pixels, the liquid crystal lens forms, by application of an electric field, a lens array having a plurality of lens portions each corresponding to each of the pixel groups, the lens portion is configured to have a first area having a constant refractive index and a second area having a distribution of refractive index, the second area is disposed at a side portion of the lens portion, the first area is disposed closer to the center than the second area, the liquid crystal lens has a first substrate, a plurality of first electrodes formed on the first substrate, a second substrate, a plurality of second electrodes formed on the second substrate, and a liquid crystal layer interposed between the first substrate and the second substrate, the plurality of the first electrodes extend parallel to each other, with a first space next to each other, the first space overlapping with the first area, the plurality of the second electrodes extend in the same direction as the plurality of the first electrodes, parallel to each other, with a second space next to each other, the second space overlapping with the first area, each of the plurality of the second electrodes is wider than each of the plurality of the first electrodes, the thickness of the liquid crystal layer is 50 micrometers or less, and interfaces of the liquid crystal layer near a surface side of the first substrate and near a surface side of the second substrate are formed in a substantially planer shape.