Display device for providing graphical display having a variable number of vertical and horizontal lines of resolution
US6570548B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Feb 6, 2001 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Aug 4, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F9/33
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display device that includes video chips. Each video chip is modular and is engageable with adjacent video chips, a plurality of pins that electrically communicate with the set of pins of adjacent video chips, and pixels that electrically communicate with the plurality of pins thereof. Each pixel is engageable with adjacent pixels, a red LED for selective illumination, a green LED for selective illumination, and a blue LED for selective illumination. The video chips are placed in an array of columns and rows which are activated by vertical scanning and horizontal scanning. The rows are supplied with a positive voltage to prevent conduction. The vertical scanning activates each row by reducing back voltage to zero. The horizontal scanning activates each column at three different levels for activating at least one of the red LED, the green LED, and the blue LED.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.