Display with switched drive current

Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device

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Details

3151691, 3151694, 315349, G09G 310

Patent

active

055258689

ABSTRACT:
A Field Emission Display ("FED") is disclosed having a brightness to project images. To achieve this benefit, the FED includes a pixelator is coupled to a display for displaying and projecting the image. By design, the pixelator conducts a drive current passing through the display grid corresponding to a degree of brightness in the resulting panel display. A first resistor having a first value is coupled between the pixelator and a voltage node or ground. Moreover, a second resistor having a second value at most one half of the first value is employed. A switch for connecting the first resistor in parallel with the second resistor is closed when a control signal is received. When the switch is enabled, the equivalent resistance between the pixelator and a voltage node or ground is substantially reduced. In another embodiment, a tapped resistor replaces the first resistor and the second resistor. When the control signal is received, a portion of the drive current is shunted through the switch.

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patent: 5210472 (1993-05-01), Casper
patent: 5283500 (1994-02-01), Kochanski
patent: 5300862 (1994-04-01), Parker et al.
patent: 5313140 (1994-05-01), Smith et al.
patent: 5357172 (1994-10-01), Lee et al.

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