Optical path control member and display device comprising same
US-2024411201-A1 · Dec 12, 2024 · US
Methods for updating color electrophoretic displays
US2022019119A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022019119-A1 |
| Application number | US-202117489230-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 29, 2021 |
| Priority date | Sep 10, 2014 |
| Publication date | Jan 20, 2022 |
| Grant date | — |
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Abstract
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An electrophoretic medium includes a fluid, a first, light scattering particle (typically white) and second, third and fourth particles having three subtractive primary colors (typically magenta, cyan and yellow); at least two of these colored particles being non-light scattering. The first and second particles bear polymer coatings such that the electric field required to separate an aggregate formed by the third and the fourth particles is greater than that required to separate an aggregate formed from any other two types of particles. Methods for driving the medium to produce white, black, magenta, cyan, yellow, red, green and blue colors are also described.
First claim
Opening claim text (preview).
1 . A color electrophoretic display comprising a layer of electrophoretic media, a controller, and a bezel surrounding the layer of electrophoretic media, the bezel including one or more light elements, wherein the controller is configured to synchronize operation of the one or more light elements with a transition between images displayed by the display. 2 . The color electrophoretic display of claim 1 , wherein the controller is configured to illuminate the one or more light elements during the transition between images displayed by the display. 3 . The color electrophoretic display of claim 1 , wherein the controller is configured to switch off the one or more light elements during the transition between images displayed by the display. 4 . The color electrophoretic display of claim 1 , wherein the controller is configured to intermittently illuminate the one or more light elements during transition between images displayed by the display.
Assignees
Inventors
Classifications
based on particles moving in a fluid or in a gas, e.g. electrophoretic devices (electrophoretic devices per se G02F1/167) · CPC title
Control of illumination source (illumination devices structurally associated with liquid crystal cells G02F1/1336) · CPC title
characterised by the composition or particle type · CPC title
- G02F1/167Primary
by electrophoresis · CPC title
Display of colours (specific for liquid crystal displays G09G3/3607) · CPC title
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- What does patent US2022019119A1 cover?
- An electrophoretic medium includes a fluid, a first, light scattering particle (typically white) and second, third and fourth particles having three subtractive primary colors (typically magenta, cyan and yellow); at least two of these colored particles being non-light scattering. The first and second particles bear polymer coatings such that the electric field required to separate an aggregate…
- Who is the assignee on this patent?
- E Ink Corp
- What technology area does this patent fall under?
- Primary CPC classification G02F1/167. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Jan 20 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).