Patent ID: 9366909
Filing Date: 2016-06-14
CPC Classification: G02B,G02F,H04N

Claim Text:
1. An image display device comprising: a display panel including a plurality of pixels arranged in a matrix; and a liquid crystal lens arranged on a display surface side of the display panel, wherein the liquid crystal lens includes: a first substrate and a second substrate, a plurality of first electrodes on the first substrate, leaving a space next to each other and electrically connected with each other, a second electrode on the second substrate, overlapping with the plurality of first electrodes, a liquid crystal layer interposed between the first substrate and the second substrate, and a first alignment film formed on an interface surface between the first substrate and the liquid crystal layer and a second alignment film formed on an interface surface between the second substrate and the liquid crystal layer, the first alignment film and the second alignment film are alignment films subjected to a rubbing treatment so that liquid crystal molecules in the liquid crystal layer are aligned in a 90° twist in a first direction in addition to the provision of a pretilt angle which promotes the liquid crystal molecules to rise in a direction of the pretilt angle in a state where an electric field is applied between the plurality of first electrodes and the second electrode, the liquid crystal molecules in the liquid crystal layer are aligned, by the addition of a chiral agent to the liquid crystal layer, in a 90° twist in a second direction opposite to the first direction in a state where the electric field is not applied, and the chiral agent impedes easiness of the rising of the liquid crystal molecules in the direction of the pretilt angle in a state where the electric field is applied between the plurality of first electrodes and the second electrode, whereby the liquid crystal molecules orderly rise in spite of the pretilt angle.