Materials and structures for haptic displays with simultaneous sensing and actuation
US-2016124548-A1 · May 5, 2016 · US
Haptic touch screen and method of operating the same
US10423228B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10423228-B2 |
| Application number | US-201715606440-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 26, 2017 |
| Priority date | May 27, 2016 |
| Publication date | Sep 24, 2019 |
| Grant date | Sep 24, 2019 |
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Abstract
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A haptic touch screen including a lower layer including a plurality of control electrodes, an upper layer including a plurality of haptic electrodes, a middle layer between the lower layer and upper layer, where the haptic electrodes are not conductively connected to control electronics.
First claim
Opening claim text (preview).
The invention claimed is: 1. A haptic touch screen including: a lower layer including a plurality of control electrodes; an upper layer including a plurality of haptic electrodes; a middle layer between the lower layer and upper layer, wherein the haptic electrodes are not conductively connected to control electronics and wherein the haptic electrodes are grouped with each group of haptic electrodes having a different charge. 2. The haptic touch screen of claim 1 wherein the haptic electrodes are not in electrical communication with one another. 3. The haptic touch screen of claim 1 wherein each haptic electrode mirrors a control electrode. 4. The haptic touch screen of claim 1 wherein a width of each haptic electrode greater than a characteristic distance between asperities on the skin of a fingertip. 5. The haptic touch screen of claim 1 wherein each haptic electrode is diamond shaped and is aligned with a corresponding diamond shaped control electrode. 6. The haptic touch screen of claim 5 wherein the each haptic electrode interconnects with at least one haptic electrode. 7. The haptic touch screen of claim 1 wherein each haptic electrode is dumbbell shaped. 8. The haptic touch screen of claim 1 wherein each haptic electrode has a smaller pitch than the pitch of each control electrode. 9. The haptic touch screen of claim 8 wherein the pitch of each control electrode is approximately 5 mm and each haptic electrode is 5 mm across. 10. The haptic touch screen of claim 1 wherein each haptic electrode has a smaller pitch than the pitch of each control electrode. 11. The method of claim 10 wherein the pitch of each control electrode is approximately 5 mm and each haptic electrode is 5 mm across. 12. A method of creating a haptic touch screen, the method including: forming an upper layer including a plurality of haptic electrodes; forming a lower layer including a plurality of control electrodes; forming a middle layer between the lower layer and upper layer, wherein the haptic electrodes are not conductively connected to control electronics and wherein the haptic electrodes are grouped with each group of haptic electrodes having a different charge. 13. The method of claim 12 wherein the haptic electrodes are not in electrical communication with one another. 14. The method of claim 12 wherein each haptic electrode mirrors a control electrode. 15. The method of claim 12 wherein a width of each haptic electrode greater than a characteristic distance between asperities on the skin of a fingertip. 16. The method of claim 12 wherein each haptic electrode is diamond shaped and is aligned with a corresponding diamond shaped control electrode. 17. The method of claim 16 wherein the each haptic electrode interconnects with at least one haptic electrode. 18. The method of claim 12 wherein each haptic electrode is dumbbell shaped.
Assignees
Inventors
Classifications
- G06F3/016Primary
Input arrangements with force or tactile feedback as computer generated output to the user · CPC title
Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title
by capacitive means · CPC title
Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality · CPC title
using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title
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- What does patent US10423228B2 cover?
- A haptic touch screen including a lower layer including a plurality of control electrodes, an upper layer including a plurality of haptic electrodes, a middle layer between the lower layer and upper layer, where the haptic electrodes are not conductively connected to control electronics.
- Who is the assignee on this patent?
- Univ Northwestern, Tanvas Inc
- What technology area does this patent fall under?
- Primary CPC classification G06F3/016. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Sep 24 2019 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).