FED driving method
AssigneeIndustrial Technology Research Institute
InventorsChun-Tao Lee, Cheng-Chung Lee, Jyh-Rong Sheu, Yu-Yang Chang
Life of this patent
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Abstract
An improved FED driving method, which uses a voltage control different from the prior FED, to turn an electron beam on/off and increase the resolution. The improved FED driving method is characterized in increasing a positive voltage applied to the FED's anode, grounding the FED's emitter and applying a negative voltage to the FED's gate. When driving the FED, the anode can pull electron beam out of the cathode with high accelerate voltage and the applied negative voltage on the gate can turn the electron beam on/off. As such, this allows a higher resolution because the electron beam is not influenced by the gate's lateral attraction and high lighting efficiency with high anode accelerate voltage.
Claims11
An improved FED driving method, comprising the following steps:
- preparing a triode FED, wherein the triode is a cathode with a an electronic emitter to emit an electron beam, an anode to pull the electron beam out of the cathode, and a gate to gate the electronic emitter;
- applying an anode voltage to the anode, a turn-on voltage to the cathode and a first driving voltage to the gate;
- and
- applying a second driving voltage to the gate to turn off the electron beam, wherein the second driving voltage is a negative voltage less than 0V.
Dependencies are inferred from the claim text.