Electron emission device with a grid electrode

Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube

Reexamination Certificate

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C313S497000

Reexamination Certificate

active

10999106

ABSTRACT:
An electron emission device includes a first substrate and a second substrate facing one another and having a predetermined gap therebetween. An electron emission region for emitting electrons is formed on the first substrate, and an illumination portion for displaying images responsive to the electrons emitted from the electron emission region is formed on the second substrate. A grid electrode is mounted between the first and second substrates and configured to focus the electrons emitted from the electron emission assembly. The grid electrode is provided with a plurality of electron passage openings, of which at least one portion of the interior wall of at least one of the electron passage openings is formed with an inclined plane relative to the first substrate. With the above-structured electron emission device, the grid electrode prevents and/or reduces one or more travel courses of electrons from being varied so that illumination of wrong pixels is prevented and/or reduced and overall color purity is improved.

REFERENCES:
patent: 5751109 (1998-05-01), Payne
patent: 5793152 (1998-08-01), Tang et al.
patent: 6359383 (2002-03-01), Chuang et al.
patent: 6664721 (2003-12-01), Jamison et al.
patent: 2002/0000771 (2002-01-01), Ge et al.
patent: 2004/0174109 (2004-09-01), Chiou et al.
patent: 2004/0227452 (2004-11-01), Lee et al.
patent: 2005/0239364 (2005-10-01), Yang
patent: 1202974 (1998-12-01), None
patent: 9-139177 (1997-05-01), None
English abstract for WO 97/15912 corresponding to CN 1202974 listed above.
Patent Abstracts of Japan, Publication No. 09-139177, dated May 27, 1977, in the name of Jong Min Kim.

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