Field emission display having emitter control with current sensi

Details Field emission display having emitter control with current sensi Field emission display having emitter control with current sensi

1995-11-17

1997-08-12

Pascal, Robert

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

315307, 345212, H05B 3702, H01J 1924

Patent

active

056568924

ABSTRACT:
A field emission display includes an emitter driving circuit for providing current to emitters in the display. The emitter driving circuit includes a current mirror to monitor actual current to each pixel in the array. The actual current is then compared to a reference current derived from an image signal based upon an expected current draw of the emitter to produce an error signal. The error signal is fed back to the input of the emitter driver circuit and the emitter driver circuit produces a corrected emitter current in response. During transitions in the image signal, error detection is briefly disabled to allow the emitter driver circuit to respond to the image signal.

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Lee, Kon Jiun, "Current Limiting of field Emitter Array Cathodes," Excerpt of Thesis, Georgia Institute of Technology, Aug. 1986, pp. 88-188.
Yokoo, K. et al., "Active Control of Emission Current of Field Emitter Array, Revue Le Vide, les Couches Minces," vol. 271, Mar./Apr. 1994, pp. 58-61.

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