Method for providing a gray scale in a field emission display

Details Method for providing a gray scale in a field emission display Method for providing a gray scale in a field emission display

1997-10-03

2000-02-15

Wu, Xiao

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345148, G09G 322

Patent

active

060258195

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.

REFERENCES:
patent: 5767823 (1998-06-01), Hush
patent: 5856812 (1999-01-01), Hush et al.

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