Electrophoretic information display (EPID) apparatus employing g

Details Electrophoretic information display (EPID) apparatus employing g Electrophoretic information display (EPID) apparatus employing g

1987-09-14

1989-05-23

Yusko, Donald J.

Communications: electrical

Land vehicle alarms or indicators

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

340787, 350362, G09G 334

Patent

active

048334642

ABSTRACT:
Various techniques and apparatus for grey scale operation for an electrophoretic display panel (EPID) are provided. The apparatus includes circuitry with a timing generator which produces a plurality of different time duration output waveforms which are applied to the X and Y drivers associated with the EPID. In this manner by applying a set of voltages for a given short time interval, a display is provided which results in the incomplete removal of pigment from an associated selected pixel. Hence, that pixel appears darker than surrounding pixels but not as dark as the pure dye solution as associated with the display. The amount of pigment removed and hence the darkness of each pixel is a function of the time duration during which appropriate voltages are applied to the rows and columns of the EPID. In this manner the timing generator can cause different pixels as displayed to have different darknesses or grey scale values by varying the time during which the voltage is applied to the display.

REFERENCES:
patent: 3984862 (1976-10-01), Volz
patent: 4203106 (1980-05-01), Dalisa et al.
patent: 4427979 (1984-01-01), Clerc et al.
patent: 4586039 (1986-04-01), Nonomura et al.
patent: 4655897 (1987-04-01), DiSanto et al.
patent: 4741604 (1988-05-01), Kornfeld
"A Magnetic-Particles Display"; Proceedings of the Society for Information Display; Lawrence L. Lee; vol. 16, No. 3 1975, pp. 177-183.

Affiliated with

Also associated with

Rating

Electrophoretic information display (EPID) apparatus employing g does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrophoretic information display (EPID) apparatus employing g, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrophoretic information display (EPID) apparatus employing g will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1733211