Image display device and manufacturing method of the same
View Patent ↗Disorder in the initial orientation (pretilt angle) and active orientation of liquid crystal molecules associated with higher resolution can be reduced to achieve high image quality displays. A layer having a drive element is bonded into an adhesive layer above color filters provided on the inner surface of a rear panel. The layer with the drive element, a drive electrode (pixel electrode), and a counter electrode are buried in the adhesive layer, so that the surface on the liquid crystal layer side is smooth. An orientation film is formed on the smooth surface to have a liquid crystal orientation control capability (orientation capability). A front panel includes a transparent substrate formed of glass or resin, with a smooth surface on the liquid crystal layer side. An orientation film is formed on the smooth surface of the front panel also to have liquid crystal orientation control capability (orientation capability).
1. The image display device in which a rear panel and a front panel sandwich a liquid crystal layer, the rear panel comprising:
a transparent substrate;
a color filter layer for a plurality of colors formed on the liquid crystal layer side of the transparent substrate;
an adhesive layer that buries a layer in which a drive element is configured, the drive element formed above the color filter layer for a plurality of colors, a drive electrode driven by the drive element, and a counter electrode for forming an electric field that controls the orientation of the liquid crystal molecules in the liquid crystal layer in cooperation with the drive electrode; and
an orientation film formed on the interface between the rear panel and the liquid crystal layer,
wherein the interface between the rear panel and the liquid crystal layer is a uniform flat surface across a plurality of pixels formed in correspondence to the color filters for a plurality of colors;
wherein a stopper layer is provided under the orientation film of the rear panel, the stopper layer having a capability of preventing impurities from the layer in which the drive element is configured, the adhesive layer, or the color filters from diffusing into the liquid crystal layer.
2. The image display device according to claim 1 ,
wherein a polarizer plate is provided on each of the outer sides of the rear panel and the front panel.
3. The image display device according to claim 1 ,
wherein the transparent substrate is a plastic substrate.
4. An image display device in which a rear panel and a front panel sandwich a liquid crystal layer, the rear panel comprising:
a transparent substrate;
a color filter layer for a plurality of colors formed on the liquid crystal layer side of the transparent substrate;
an adhesive layer that buries a layer in which a drive element is configured, the drive element formed above the color filter layer for a plurality of colors, a drive electrode driven by the drive element, and a counter electrode for forming an electric field that controls the orientation of the liquid crystal molecules in the liquid crystal layer in cooperation with the drive electrode;
an orientation film formed on the interface between the rear panel and the liquid crystal layer, and
a layer is provided under the orientation film of the rear panel, wherein the layer is made of materials selected from the group that includes ZrSiO 4 , α-Al 2 O 3 , HfO 2 , TiO 2 and cubic zirconia,
wherein the interface between the rear panel and the liquid crystal layer is a uniform flat surface across a plurality of pixels formed in correspondence to the color filters for a plurality of colors.
5. The image display device according to claim 4 ,
wherein a polarizer plate is provided on each of the outer sides of the rear panel and the front panel.
6. The image display device according to claim 4 ,
wherein the transparent substrate is a plastic substrate.