Method for providing a gray scale in a field emission display
US6025819A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1997 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Oct 3, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/2014
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for providing a gray scale in a field emission display (50) includes the step of providing a first driving pulse (214) having a pulse width equal to a pulse width separation (115) between the graphs (100, 200) of total charge response versus pulse width of a driving pulse for the non-ideal field emission display and the corresponding ideal field emission display. The pulse width separation (115) is the horizontal distance between the two graphs (100, 200) at a region wherein the two graphs (100, 200) are generally parallel. The pulse width, t.sub.n, of an nth driving pulse corresponding to an nth gray scale level is given by t.sub.n =t.sub.1 +[n-1]*[(t.sub.N -t.sub.1)/(N-1)], wherein t.sub.1 is the pulse width of the first driving pulse (214), N is the total number of gray scale levels, and t.sub.N is the pulse width of the Nth driving pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.