Patent ID: 7903317

Claim:
A transflective display device having a viewing side and a rear side and comprising a plurality of electrowetting elements having a first support plate facing the viewing side and a second support plate facing the rear side, each electrowetting element comprising a space between the first support plate and the second support plate and including a first fluid and a second fluid immiscible with each other, the second fluid absorbing at least a part of the optical spectrum, the space having a cross-section in the plane of the second support plate and the position of the second fluid being controllable to cover a predetermined area of the cross-section for forming a grey level, wherein a structured reflector is arranged on the second support plate comprising within the cross-section at least one area transparent for light incident from the rear side and at least one area reflective for light incident from the viewing side, the at least one transparent area and the at least one reflective area being arranged such that the predetermined area covered by the second fluid covers a proportion of the at least one transparent area and the same proportion of the at least one reflective area.