ELECTROPHORETIC DISPLAY PANEL

摘要

For the electrophoretic display panel (1) to be able to have a pixel (2) which is able to have a relative large number of different attainable optical states for displaying a picture, even if the pixel (2) has three electrodes, the electrophoretic display panel (1) has a pixel (2) and drive means (100); the pixel (2) has an electrophoretic medium (5) having first and second charged particles (6,7), the first and the second particles (6,7) having opposite polarity and dissimilar optical properties and being able to occupy positions in the pixel (2), a first, a second and a reset electrode (11,12,13) for receiving potentials, and an optical state depending on the positions of the particles (6,7) in the pixel (2); the drive means (100) are arranged for controlling a sequence of the potentials received by the electrodes (11,12,13) for enabling the first and the second particles (6,7) to occupy their positions for displaying the picture, the sequence comprising first particles positioning potentials for enabling the first particles (6) to occupy a position for displaying the picture, subsequently second particles reset potentials for enabling the second particles (7) to occupy a position near the reset electrode (13) and for preventing the first particles (6) from substantially changing their contribution to the optical state of the pixel (2), subsequently second particles positioning potentials for enabling the second particles (7) to occupy a position for displaying the picture and for preventing the first particles (6) from substantially changing their contribution to the optical state of the pixel (2).