Retardation element and display
AssigneeSony Corporation
InventorMitsunari Hoshi
Life of this patent
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Abstract
A retardation element allowing a reduction in ghosts caused by optical anisotropy of a base film, and a display including the retardation element are provided. A retardation element includes: a base film having optical anisotropy; and a retardation layer formed on the base film and having optical anisotropy, in which the retardation layer includes retardation regions of two or more kinds of which slow axes are oriented in different directions from one another, the retardation regions of two or more kinds are arranged regularly adjacent to one another in an in-plane direction of the base film, and each of the retardation regions has a slow axis in a direction intersecting with a slow axis of the base film at an angle larger than 45°.
Claims9
A retardation element comprising:
- a base film having optical anisotropy;
- and
- a retardation layer formed on the base film and having optical anisotropy,
- wherein the retardation layer includes retardation regions of two or more kinds of which slow axes are oriented in different directions from one another,
- the retardation regions of two or more kinds are arranged regularly adjacent to one another in an in-plane direction of the base film, and
- each of the retardation regions has a slow axis in a direction intersecting with a slow axis of the base film at an angle larger than 45°.
A display comprising:
- a display panel being driven in response to an image signal;
- a backlight unit applying light to the display panel;
- and
- a retardation element arranged on a side opposite to a side where the backlight unit is arranged of the display panel,
- wherein the retardation element includes:
- a base film having optical anisotropy, and
- a retardation layer formed on the base film and having optical anisotropy, and
- the retardation layer includes retardation regions of two or more kinds of which slow axes are oriented in different directions from one another,
- the retardation regions of two or more kinds are arranged regularly adjacent to one another in an in-plane direction of the base film, and
- each of the retardation regions has a slow axis in a direction intersecting with a slow axis of the base film at an angle larger than 45°.
Dependencies are inferred from the claim text.