Patent ID: 7245335
Filing Date: 2007-07-17
Classification: G02F

Abstract:
1. A display device comprising: a backlight unit for emitting light forward; a plurality of picture elements, which are arranged in columns and rows to define a picture element plane and each of which has a transmitting region to transmit the light that has come from the backlight unit; and a plurality of collecting elements, which are arranged in front of the backlight unit to transmit and collect the light on the picture element plane, each and every one of the collecting elements being associated with the transmitting region of one of the picture elements, wherein the light that has been transmitted through each said collecting element forms a beam spot on the picture element plane, the center of the beam spot being located within the transmitting region associated with the collecting element, wherein two beam spots, which are formed on two of the picture elements that are adjacent to each other in a row direction, have their centers of mass shifted from each other in a column direction on the picture element plane; wherein the picture elements are arranged at a pitch P wherein as measured in the row direction, the size of the collecting element associated with the transmitting region of the first picture element is different from that of the collecting element associated with the transmitting region of the second picture element.