Light modulating devices

Details Light modulating devices Light modulating devices

1999-04-27

2000-08-22

Ben, Loha

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359252, 345147, 345150, 345204, G02B 2600, G09G 510

Patent

active

061081221

ABSTRACT:
A ferroelectric liquid crystal display panel comprises an addressable matrix of pixels and an arrangement for selectively addressing each pixel within a series of addressing frames in order to vary the transmission level of the pixel relative to the transmission levels of the other pixels. The addressing arrangement utilizes a temporal dither (TD) addressing scheme for addressing each pixel within each frame with different combinations of temporal dither signals applied to separately addressable temporal bits within the frame to produce different overall transmission levels. In order to limit the perceived errors at the transitions between different grey levels the TD addressing scheme is arranged to address a first pixel with a first combination of TD signals to produce a first grey level and to address a second pixel with a second combination of TD signals, which differs from the first combination of TD signals, to produce the same first grey level such that, during a transition between the first grey level and a second grey level, a transient in one direction in the transmission level of the first pixel is at least partially compensated for by a transient in the opposite direction in the transmission level of the second pixel.

REFERENCES:
patent: 5389944 (1995-02-01), Liu
patent: 5818419 (1998-10-01), Tajima et al.
patent: 5986640 (1999-11-01), Baldwin et al.
patent: 5986647 (1999-11-01), Feldman
patent: 6008794 (1999-12-01), Ishii
P.W.H. Surguy et al., Ferroelectrics, 1991, vol. 122, pp. 63-79, "The `Joers/Alvey Ferroelectric Multiplexing Scheme".
Zhu Yi-Wen et al., Technical Report of IEICE EID 96-60 (1996-11), pp. 67-72, "A Motion-Dependent Equalising-Pulse Technique For Reducing Dynamic False Contours On PDPs".

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