Electrophoretic display with single character erasure

Details Electrophoretic display with single character erasure Electrophoretic display with single character erasure

1991-08-23

1993-06-29

Niebling, John

Chemistry: electrical and wave energy

Apparatus

Coating, forming or etching by sputtering

2041801, 340787, G09G 334, G09G 300

Patent

active

052231151

ABSTRACT:
A triode type electrophoretic display includes a pair of substantially identical glass faceplates sealed against a peripheral sealing wall to form a fluid-tight envelope for containing an electrophoretic fluid. A first faceplate bears the anode which is composed of a plurality of elongated substantially parallel horizontal conductor members disposed within a first plane and a plurality of elongated substantially parallel vertical conductor members. The horizontal and vertical members are insulated from each other by interstitial insulator strips underlying the vertical members and by a SiO.sub.2 layer. The vertical and horizontal members are slotted and grouped into groups so that the area of the intersection of a vertical group and a horizontal group approximates that of a single character. The cathode and grid are formed on the other faceplate in essentially the same manner as the composite anode. By placing the proper voltages on the horizontal and vertical elements of the anode, selective characters may be erased from the display.

REFERENCES:
patent: 4045327 (1977-08-01), Noma et al.
patent: 4093534 (1978-06-01), Carter et al.
patent: 4123346 (1978-10-01), Ploix
patent: 4218302 (1980-08-01), Dalisa et al.
patent: 4324456 (1982-04-01), Dalisa
patent: 4522472 (1985-06-01), Liebert et al.
patent: 4655897 (1987-04-01), DiSanto et al.
patent: 4680103 (1987-07-01), Solomon et al.
patent: 4732830 (1988-03-01), DiSanto et al.
patent: 4742345 (1988-05-01), DiSanto et al.
patent: 4772820 (1988-09-01), DiSanto et al.

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