Display devices

Details Display devices Display devices

1979-01-23

1982-03-30

Trafton, David L.

Communications: electrical

Continuously variable indicating

With meter reading

250209, 340719, 340781, G08B 536

Patent

active

043227201

ABSTRACT:
A display device formed as a multilayer panel. The display is built up of d.c. electroluminescent display elements arranged in cells each containing an array of elements, e.g. for the display of a character. A display element is selected and caused to start luminescing by (a) a flash of light from a cell selector d.c. electroluminescent element which lowers the resistance of a group of associated photoconductors in series with the display elements, and (b) an energizing pulse applied, in the cell in question, to one of the display elements through its photoconductor. Once initiated, luminescence is maintained by an energizing voltage applied through a photoconductor radiatively coupled to the element. The information written in a cell is selectively erased as a whole by a further flash from the cell-selector element, which reduces the voltage applied to the lit elements of the cell to the point at which luminescence ceases. The photoconductors are arranged back-to-back on either side of an opaque printed circuit board and connected to each other and the display elements by through-layer connections.

REFERENCES:
patent: 3152257 (1964-10-01), Santen et al.
patent: 3207905 (1965-09-01), Bray
patent: 3221170 (1965-11-01), Sylvander
patent: 3375373 (1968-03-01), Hageman

Affiliated with

Also associated with

Rating

Display devices does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Display devices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Display devices will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-384859