Sheet type large display unit

Details Sheet type large display unit Sheet type large display unit

1989-10-16

1990-11-20

Dorner, Kenneth J.

Card, picture, or sign exhibiting

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Alphanumeric device

40444, 40550, 40581, 40624, G09F 900

Patent

active

049708120

ABSTRACT:
A sheet type large display unit includes a thin, flexible back sheet which is capable of being rolled up, the flexible back sheet having a plurality of electrical connections formed thereon in rows and columns; a plurality of display dot devices mounted on the front surface of the back sheet in a matrix arrangement, each display dot device including four light emitting diodes mounted on a printed circuit board substrate and connected with the electrical connections; a thin, flexible transparent display sheet which is capable of being rolled up, the display sheet being in covering relation to the display dot devices; and an adhesive which secures the peripheral edge of the display sheet in sealing relation to the peripheral edge of the back sheet.

REFERENCES:
patent: 3163949 (1965-01-01), Gley
patent: 4254453 (1981-03-01), Mouyard et al.
patent: 4612720 (1986-09-01), Manners-Smith et al.
patent: 4727289 (1988-02-01), Uchida
patent: 4742432 (1988-05-01), Thillays et al.
patent: 4783920 (1988-11-01), Tolk
patent: 4851824 (1989-07-01), Murata

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