Methods for driving electro-optic displays
US-9230492-B2 · Jan 5, 2016 · US
Methods for driving electro-optic displays
US9495918B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9495918-B2 |
| Application number | US-201414193081-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 28, 2014 |
| Priority date | Mar 1, 2013 |
| Publication date | Nov 15, 2016 |
| Grant date | Nov 15, 2016 |
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- Title
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Abstract
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A method is provided for driving electro-optic displays, especially bistable displays, to avoid edge effects when driving a limited area of the display. Pixels in an edge elimination region, at least one pixel wide and substantially surrounding the limited area, are driven from their original gray level to an intermediate gray level, and then back to their original gray level.
First claim
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The invention claimed is: 1. A method of driving an electro-optic display having a plurality of pixels, the method comprising applying a local drive scheme to change the optical state of at least one limited area of the display and driving pixels in an edge elimination region, at least one pixel wide and substantially surrounding the at least one limited area, from their original gray level to an intermediate gray level, and then back to their original gray level. 2. A method according to claim 1 wherein the edge elimination region comprises pixels which share only a common corner with the at least one limited area. 3. A method according to claim 1 wherein the edge elimination region comprises pixels within the at least one limited area. 4. A method according to claim 1 wherein the edge elimination region is more than one pixel wide, and the pixels in the edge elimination region are driven to differing intermediate gray levels depending upon the distance of the pixels from the boundary of the at least one limited area. 5. A display controller adapted to carry out the method of claim 1 , the display controller being capable of driving an electro-optic display having a plurality of pixels and comprising edge detection means for detecting the edges of limited areas of the display undergoing a transition, and for determining an edge elimination region at least one pixel wide and substantially surrounding the at least one limited area, the display controller being arranged to drive the pixels in the edge elimination region from their original gray level to an intermediate gray level, and then back to their original gray level.
Assignees
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Classifications
using electrochromic devices · CPC title
having two or more microcells partitioned by walls, e.g. of microcup type · CPC title
Partial updating of the display screen · CPC title
Calibration of display systems · CPC title
Details of flat display driving waveforms · CPC title
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Frequently asked questions
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- What does patent US9495918B2 cover?
- A method is provided for driving electro-optic displays, especially bistable displays, to avoid edge effects when driving a limited area of the display. Pixels in an edge elimination region, at least one pixel wide and substantially surrounding the limited area, are driven from their original gray level to an intermediate gray level, and then back to their original gray level.
- Who is the assignee on this patent?
- E Ink Corp
- What technology area does this patent fall under?
- Primary CPC classification G09G3/344. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Nov 15 2016 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).