| 摘要 |
PROBLEM TO BE SOLVED: To provide a light-emitting device of lower power consumption, higher light emission efficiency, and longer life. SOLUTION: The light-emitting device includes an airtight container 1 in which a xenon gas is sealed up, an electron source 2 for applying electrons into the airtight container 1 for exciting the xenon gas, an anode electrode 3 arranged to face the electron source 2 in the airtight container 1, a phosphor layer 4 which is arranged on the inner surface side of the airtight container 1 and is excited for emission by the excitation light consisting of the light radiated during an emission process of the excited xenon gas, and a control device 5 for controlling a voltage between a surface electrode 27 of the electron source 2 and a lower electrode 25 (between drive electrodes) as well as a voltage between the anode electrode 3 and the electron source 2. The control device 5 controls the voltage between a surface electrode 27 of the electron source 2 and the lower electrode 25 so that the peak energy in energy distribution of electrons comes to be larger than the excitation energy of the xenon gas but smaller than the ionized energy of the xenon gas. Thus, the xenon gas is excited without discharging it. COPYRIGHT: (C)2010,JPO&INPIT |
