Display device comprising an optical waveguide plate and method of operating for the same

A display device (1) for displaying image information (4) comprising:

• a display panel (2) comprising an optical waveguide plate (22), a second plate (24) facing the optical waveguide plate (22), a movable element (21) between the optical waveguide plate (22) and the second plate (24), and picture elements (5) for decoupling light from the optical waveguide plate (22) through local contact of the movable element (21) with the optical waveguide plate (22), said picture elements (5) being arranged in a predetermined first number of substantially parallel lines (6);
• and
• selection means (3) arranged for multiline addressing of the picture elements (5) arranged in a predetermined second number of lines (6), forming part of the predetermined first number of substantially parallel lines (6), and comprising processing means (11,12) arranged for:
• decomposing the image information (4) into a number of subfields (13) to be displayed, each subfield (13) having its own predetermined number of active standard periods of time (19) per line (16);
• and
• executing a subfield modulation scheme by generating a sequence (14) of activating, active, and deactivating standard periods of time, said sequence (14) comprising:
• in a first subfield (13), an activating and a deactivating standard period of time (17,18) to activate and to deactivate picture elements (5) arranged in a last line (16) of the predetermined second number of lines;
• and
• in a second consecutive subfield (13), an activating and a deactivating standard period of time (17, 18) to activate and to deactivate picture elements (5) arranged in a first line (16) of the predetermined second number of lines,
• characterized in that the activating standard period of time (17) for activating the picture elements (5) arranged in the first line (16) in the second consecutive subfield (13) is substantially a next consecutive standard period of time after the activating standard period of time (17) for activating the picture elements (5) arranged in the last line (16) of the first subfield (13), under predetermined conditions of the predetermined number of active standard periods of time and the predetermined second number of lines.