Methods for driving video electro-optic displays
US-10319313-B2 · Jun 11, 2019 · US
Method for driving two layer variable transmission display
US11733580B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11733580-B2 |
| Application number | US-202117243089-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 28, 2021 |
| Priority date | May 21, 2010 |
| Publication date | Aug 22, 2023 |
| Grant date | Aug 22, 2023 |
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- Title
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Abstract
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An electro-optic display comprising at least two separate layers of electro-optic material, with one of these layers being capable of displaying at least one optical state which cannot be displayed by the other layer. The display is driven by a single set of electrodes between which both layers are sandwiched, the two layers being controllable at least partially independently of one another. Another form of the invention uses three different types of particles within a single electrophoretic layer, with the three types of particles being arranged to shutter independently of one another.
First claim
Opening claim text (preview).
The invention claimed is: 1. A microcavity electrophoretic display comprising microcapsules, each microcapsule having walls defining microcavities, the microcavities containing a fluid and first, second and third types of particles dispersed in the fluid, each of the first, second and third types of particles having an unshuttered state, in which the particles occupy substantially the entire area of the microcavity, and a shuttered state, in which the particles occupy only a minor proportion of the areas of the microcavity, the first, second and third particles being of differing colors and differing in dielectrophoretic or electro-osmotic properties such that the first, second and third types of particles can be moved between their unshuttered and shuttered states independently of one another. 2. The microcavity electrophoretic display of claim 1 , wherein the colors of the first, second and third types of particles are such that when all three types of particles are in their unshuttered states the display appears substantially black. 3. The microcavity electrophoretic display of claim 1 , wherein the microcapsule walls comprise gelatin. 4. The microcavity electrophoretic display of claim 3 , wherein the microcapsule walls comprise a cross-linked mixture of gelatin and acacia. 5. The microcavity electrophoretic display of claim 1 , wherein the microcapsules are approximately 20-100 μm in diameter.
Assignees
Inventors
Classifications
- G02F1/16757Primary
Microcapsules · CPC title
- G02F1/167Primary
by electrophoresis · CPC title
Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells · CPC title
having two or more microcells partitioned by walls, e.g. of microcup type · CPC title
characterised by the composition or particle type · CPC title
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- What does patent US11733580B2 cover?
- An electro-optic display comprising at least two separate layers of electro-optic material, with one of these layers being capable of displaying at least one optical state which cannot be displayed by the other layer. The display is driven by a single set of electrodes between which both layers are sandwiched, the two layers being controllable at least partially independently of one another. An…
- Who is the assignee on this patent?
- E Ink Corp
- What technology area does this patent fall under?
- Primary CPC classification G02F1/16757. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Aug 22 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).