Brightness uniformity on a display screen

Details Brightness uniformity on a display screen Brightness uniformity on a display screen

1996-04-30

1998-07-21

Peng, John K.

Television

Cathode-ray tube display beam current control

348626, 348687, 315386, H04N 559

Patent

active

057841063

ABSTRACT:
A method for improving brightness uniformity reduces a decrease of light towards the edges of a display screen (10) of a display tube (1). The extent of the decrease of light particularly depends on an increase of the thickness of the glass of the display screen (10) from the center of the display screen (10) to its edges, and on a transmission of the glass. This decrease of light is corrected by causing the deflection rate to decrease (C1, Cs) from the center of the display screen (10) towards its edges.

REFERENCES:
patent: 4300157 (1981-11-01), Midland
patent: 4701788 (1987-10-01), Desjardins
patent: 4916365 (1990-04-01), Arai
patent: 5032924 (1991-07-01), Brown et al.
patent: 5600381 (1997-02-01), Griepentrog

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