Writing device having light emitting diode display panel
US9280216B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 11, 2013 |
| Grant date | Mar 8, 2016 |
| Priority date | — |
| Expiry date | Sep 30, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/042
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A writing device includes a writing pen and a light emitting diode display panel. The writing pen emits three different-colored optical signals. The light emitting diode display panel includes a control module and a plurality of pixels. Each pixel includes first, second and third light sources, first, second and third light sensing elements, and a touch element. The first to third light sensing elements are configured to receive the three optical signals and generate first, second and third selective signals, respectively. The touch element generates a control signal when touched by the writing pen. According to the three selective signals and the control signal, the control module selectively turns on the first light source, the second light source, and the third light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.