Display device for improving image contrast

Details Display device for improving image contrast Display device for improving image contrast

2011-01-11

2011-01-11

Sugarman, Scott J (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C359S237000, C359S318000

Reexamination Certificate

active

07869116

ABSTRACT:
A light valve unit may include a first conductive layer and a second conductive layer disposed on opposite sides of each other with respect to a plurality of cells in which at least some of the cells include a first material and a second material. The first material may have a lower light transmissivity property than the second material and a position of the first material within a corresponding cell may be changeable responsive to application of an electric field between the first and second conductive layers. The second conductive layer may include at least two electrodes and a gap defined between the two electrodes. A portion of the light valve unit adjacent to the gap may be configured to have a transmissivity that is substantially less than transmissivity of a portion of the light valve unit adjacent to cells across which the electric field is applied, but greater than or equal to transmissivity of a portion of the light valve unit adjacent to cells across which the electric field is not applied.

REFERENCES:
patent: 2008/0297880 (2008-12-01), Steckl et al.
patent: 2009/0040591 (2009-02-01), Cheng et al.

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