Reflective electrophoretic display with laterally adjacent color cells using an absorbing panel

An electrophoretic display having a plurality of cells disposed between a light-transmissive front window and a light-absorbing rear panel, comprising:

• multiple pixels each formed by multiple cells in a lateral adjacent arrangement relative to each other and each cell being between a light-transmissive front window and a light-absorbing rear panel;
• each cell containing charged, light-scattering pigment particles in a light-transmissive fluid;
• a non-obstructing collecting electrode to substantially remove pigment particles in the respective cells from the path of light so that light can reach the light-absorbing rear panel without significant scattering or reflection;
• a non-obstructing counter electrode, cooperating with the collecting electrode to distribute the pigment particles in the respective cells to substantially scatter and reflect the light that enters the respective cells;
• and
• a color filter element for each respective cell, the respective filter element located across the window of each respective cell;
• and wherein in three adjacent cells of each pixel, respectively, the color filter element is red and its associated light-absorbing rear panel is cyan, the color filter element is green and its associated light-absorbing rear panel is magenta, and the color filter element is blue and its associated light-absorbing rear panel is yellow.

An electrophoretic display comprising:

• a light-transmissive front window and a parallel, spaced-apart light-absorbing rear panel, the front windows and rear panels defining a group of color cells disposed in a lateral adjacent relationship relative to each other to form a pixel;
• a different colored light-transmissive fluid disposed between the front window and the light-absorbing rear panel in each respective cell of the pixel, thereby forming a respective color filter medium for the respective cell;
• a suspension including charged, light-scattering pigment particles in the colored light-transmissive fluid of each cell;
• a non-obstructing collecting electrode associated with each cell, which acts to substantially remove pigment particles from the light path so that light can pass through the colored fluid and reach the light-absorbing rear panel without significant scattering or reflection;
• and
• a non-obstructing counter electrode associated with each cell, which acts to position the pigment particles to substantially scatter and reflect the light so that light entering the cell and travelling through the colored fluid is significantly reflected back through the front window before reaching the light-absorbing rear panel, and wherein the respective collecting electrode and the respective counter electrode act in concert for respective cells to thereby position the particles in the respective cells.

An electrophoretic display comprising a plurality of cells, each disposed between a light-transmissive front window and a light-absorbing rear panel, a group of cells acting to form a pixel comprising:

• a red color fluid cell, a green color fluid cell, and a blue color fluid cell located in lateral adjacency relative to each other;
• a suspension in each color fluid cell including charged, light-scattering pigment particles in the colored fluid, the fluid being a light-transmissive fluid;
• non-obstructing collecting electrodes, at least one associated with each color cell, which act to substantially remove pigment particles from the light path SO that light can pass through the colored fluid and reach the light-absorbing rear panel without significant scattering and reflection;
• and
• non-obstructing counter electrodes, at least one associated with each color cell, which act to position the pigment particles to substantially scatter and reflect the light so that light travelling through the colored fluid is significantly reflected back through the front window before reaching the light-absorbing rear panel, the collecting electrodes and the counter electrodes in each respective cell acting in concert to thereby position the particles in the respective cells.

An electrophoretic display comprising a plurality of cells having a light-transmissive front window and a light-absorbing rear panel, and wherein a pixel comprises three individual cells, the cells being in lateral adjacency relative to each other:

• a) the first cell comprising a suspension of charged, light-scattering pigment particles in a first colored fluid, the first colored fluid serving to act as a first color filter and the pigment particles scattering the visible light not absorbed by the first colored fluid;
• b) the second cell comprising a suspension of charged, light-scattering pigment particles in a second colored fluid, the second colored fluid serving to act as a second color filter and the pigment particles scattering the visible light not absorbed by the second colored fluid;
• c) the third cell comprising a suspension of charged, light-scattering pigment particles in a third colored fluid, the third colored fluid serving to act as a third color filter and the pigment particles scattering the visible light not absorbed by the third colored fluid;
• and
• d) each cell including:
• (i) a non-obstructing collecting electrode acting to substantially remove pigment particles from the path of light, so that light can pass through the colored fluid and reach the light-absorbing rear panel without significant scattering or reflection, and
• (ii) a non-obstructing counter electrode acting to position the pigment particles in the path of light, so that light entering the cell and traveling through the colored fluid is substantially scattered and reflected back through the front window before reaching the light-absorbing rear panel, the collecting electrode and the counter electrode acting in concert for respective cells to thereby position the particles in the respective cells.