Patent ID: 7551148

Claim:
A display device for displaying an image, comprising at least: a first display unit of a first width having a first active region to display a first primary image, a second display unit of a second width having a second active region to display a second primary image, said second active region and first active region being adjacent to each other but having a gap between them, and an image merging element adapted to form a first secondary image based on said first primary image and a second secondary image based on said second primary image, wherein said image merging element comprises at least a first image shifting element of a third width adapted to shift and/or bend paths of light rays originating from said first primary image substantially in a first direction only in order to change a visual distance between said first secondary image and said second secondary image wherein said image merging element further comprises a second image shifting element of a fourth width adapted to shift paths of light rays originating from said second primary image substantially in a second direction only in order to change the visual distance between said first secondary image and said second secondary image, said second direction being substantially opposite to said first direction wherein a sum of the first width and the second width is greater than a sum of the third width and the fourth width so as to make the image merging element foldable between the first display unit and the second display unit in moving to a closed state from a viewing state in which the image merging element, the first display unit and the second display unit are arranged in a triangular configuration, wherein the triangular configuration comprising a first side is the first display unit, a second side is the second display unit, and a third side is the image merging element.