Microtip fluorescent matrix screen addressing process

Details Microtip fluorescent matrix screen addressing process Microtip fluorescent matrix screen addressing process

1989-05-31

1992-08-11

Weldon, Ulysses

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340781, G09G 304, G09G 330

Patent

active

051383080

ABSTRACT:
A process for regulating the brightness of a microdot fluorescent screen and apparatus for performing this process. The screen is of the matrix type and is addressed by a scan of the rows, a pixel being formed at each row-column intersection. For an illuminated pixel, for a selection time T of the corresponding row, a quantity of charges is emitted by the associated microdots. The brightness is regulated during the selection time of each row by controlling the quantity of charges emitted by the microdots of each pixel to be illuminated, the charge quantity being identical for each pixel.

REFERENCES:
patent: 4225807 (1980-09-01), Ise et al.
patent: 4542379 (1985-09-01), Satou
patent: 4707692 (1987-11-01), Higgins et al.
Electronics, vo. 59, No. 24, Jun. 16, 1986, pp. 18 and 19.

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