Electron emission device

Details Electron emission device Electron emission device

2006-03-16

2008-05-27

Patel, Vip (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

C313S414000

Reexamination Certificate

active

07378789

ABSTRACT:
An electron emission device includes a first substrate; a second substrate facing the first substrate and spaced apart from the first substrate; an electron emission unit on the first substrate, the electron emission unit having at least two electrodes and an emission region for emitting electrons; and a light emission unit on the second substrate to be excited by a beam formed with the electrons. The electron emission unit includes a focusing electrode for focusing the beam. The light emission unit includes a screen on which pixels are arranged in a pattern. Each of the pixels has a phosphor layer. The phosphor layer of one of the pixels is excited by the beam. The focusing electrode includes an opening, through which the beam passes. A length of the opening is LV, a pitch of a pixel is PV, and LVand PVsatisfy: 0.25 ≦LV/PV≦0.60.

REFERENCES:
patent: 5955850 (1999-09-01), Yamaguchi et al.
patent: 1 429 363 (2004-06-01), None
patent: 1 429 363 (2006-06-01), None
European Search Report dated Aug. 22, 2006, for EP 06112052.3, in the name of Samsung SDI Co., Ltd.

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