MEMS field emission device

Details MEMS field emission device MEMS field emission device

2001-06-19

2003-07-01

Philogene, Haissa (Department: 2821)

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

C315S169100, C313S309000, C313S495000, C345S108000

Reexamination Certificate

active

06586889

ABSTRACT:

TECHNICAL FIELD
The present invention relates in general to display devices, and in particular, to field emission display devices.
BACKGROUND INFORMATION
Field emission displays have been previously described as being structured in either diode or triode modes. In a diode mode, the cathode is separated from the anode by a gap. The value of the gap is determined by considering the operating voltage of the phosphor and the turn-on electric field of the electron emitter material (cold cathode). Diode displays can be made with either microtip cathodes or with flat emitters such as carbon-based films. During operation, the gap is fixed by spacers, and the electric current to the phosphor is switched on and off by swing voltages between the anode and cathode. In a passive matrix drive mode, the pixel is off at one-half of the on voltage.
In a triode mode, a grid separates the cathode from the anode. All microtip devices operate in this mode. A triode mode allows a greater degree of flexibility in terms of operating parameters, and the switching voltages can be very low relative to the diode display. In the triode display, a small gap separates the cathode from the grid electrode. This gap is held constant, and the current from the cathode is switched on and off by switching the voltage between the grid and the cathode. The grid allows a significant fraction of the electrons to pass through before they arc and then accelerate to the anode. The acceleration voltage can be very large (5-10 kilovolts or higher) to achieve high phosphor efficiency.


REFERENCES:
patent: 3866077 (1975-02-01), Baker et al.
patent: 4272699 (1981-06-01), Faubel et al.
patent: 4728851 (1988-03-01), Lambe
patent: 5500142 (1996-03-01), Ushida et al.
patent: 5512793 (1996-04-01), Takeuchi et al.
patent: 5517074 (1996-05-01), Van Pelt et al.
patent: 5593134 (1997-01-01), Steber et al.
patent: 5607535 (1997-03-01), Tsukada et al.
patent: 5622748 (1997-04-01), Takeuchi et al.
patent: 5633554 (1997-05-01), Kaji
patent: 5643379 (1997-07-01), Takeuchi et al.
patent: 5681410 (1997-10-01), Takeuchi et al.
patent: 5691593 (1997-11-01), Takeuchi et al.
patent: 5726073 (1998-03-01), Zhang et al.
patent: 5771321 (1998-06-01), Stern
patent: 5773921 (1998-06-01), Keesmann et al.
patent: 5821841 (1998-10-01), Furlani et al.
patent: 5834879 (1998-11-01), Watanabe et al.
patent: 5860202 (1999-01-01), Okawa et al.
patent: 5862275 (1999-01-01), Takeuchi et al.
patent: 5903098 (1999-05-01), Jones
patent: 5912526 (1999-06-01), Okawa et al.
patent: 6005351 (1999-12-01), Sverdrup et al.
patent: 6031657 (2000-02-01), Robinson et al.
patent: 6084338 (2000-07-01), Bojkov et al.
patent: 6097138 (2000-08-01), Nakamoto
patent: 6107732 (2000-08-01), Tolt
patent: 6111818 (2000-08-01), Bowen et al.
patent: 6230378 (2001-05-01), Cramer et al.
patent: 6232701 (2001-05-01), Schuh et al.
patent: 6239547 (2001-05-01), Uemura et al.
patent: 6265466 (2001-07-01), Glatkowski et al.
patent: 6359383 (2002-03-01), Chuang et al.
patent: 6380671 (2002-04-01), Lee
patent: 0 905 737 (1999-03-01), None
patent: 0 951 047 (1999-10-01), None
patent: 58-216327 (1994-02-01), None
patent: 10-050240 (1998-02-01), None
patent: 9-221309 (1998-06-01), None
patent: 10-199398 (1998-07-01), None
patent: 11-111161 (1999-04-01), None
patent: 0 913 508 (1999-05-01), None
patent: 11-135042 (1999-05-01), None
patent: 11-260244 (1999-09-01), None
patent: 11-260249 (1999-09-01), None
patent: 11-297245 (1999-10-01), None
patent: 11-329311 (1999-11-01), None
patent: 11-329312 (1999-11-01), None
patent: WO 98/21736 (1998-05-01), None
Y. Takeuchi et al., “28.2: Tiled Display Utilizing Ceramic Actuators for Large Area Flat Panels,”SID 01 Digest, Jun. 5, 2001, pp. 470-473.

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