TIR-modulated wide viewing angle display
AssigneeConcord (Hk) International Education Limited
InventorsBram M. Sadlik, Robert J. Fleming, Steven Gou, Scott W. Ferguson, Rob Hannebauer, Alex Henzen
Life of this patent
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Abstract
The disclosed embodiments relate to lateral migration of particles in a totally internally reflective displays. In certain embodiments, the reflective image displays include partial and full walls to form partitions within the display. The walls mitigate diffusion and lateral migration or drift of electrophoretically mobile particles due to lateral electric fields at adjacent pixels. This improves image quality, bistability and long-term display performance.
Claims19
An image display device to limit particle drift and diffusion, the display comprising:
- a front electrode;
- an optically transparent sheet having a surface with a plurality of convex protrusions extending from a surface thereof;
- a rear electrode positioned opposite the plurality of convex protrusions to form a cavity therebetween;
- at least one electrophoretically mobile particle suspended within the cavity;
- and
- a plurality of partitions to form one or more segments within the cavity, wherein at least one protrusion extends partially into the cavity;
- wherein the plurality of partitions further comprises at least three or more partitions that form one or more partitioned space within the cavity and wherein a first partition of the plurality of partitions extends from a convex protrusion arch.
An image display device to limit particle drift and diffusion, the display comprising:
- a front electrode;
- an optically transparent sheet having a surface with a plurality of convex protrusions extending from a surface thereof;
- a rear electrode positioned opposite the plurality of convex protrusions to form a cavity therebetween;
- at least one electrophoretically mobile particle suspended within the cavity;
- and
- a plurality of partitions to form one or more segments within the cavity, wherein the plurality of partitions further include at least three or more partitions that form one or more partitioned space within the cavity and wherein the first of the plurality of partitions extends from a convex protrusion arch.
Dependencies are inferred from the claim text.