| 摘要 |
PROBLEM TO BE SOLVED: To provide a light-emitting device capable of achieving low power consumption, high light-emitting efficiency, and longer lifetime, and making color-matching. SOLUTION: The light-emitting device includes an airtight container 1 where a gas capable of emitting light at a plurality of wavelengths, an electron source 2 supplying electrons for exciting the gas into the airtight container 1, an anode electrode 3 oppositely arranged on the electron source 2, a phosphor layer 4 arranged at an inner surface side of the airtight container 1 and emitting the light by being excited with excited light made of light emitted at a light-emitting step of the excited gas, and a control device 5 for controlling voltage between a surface electrode 27 and a lower electrode 25 (between driving electrodes) of the electron source 2 and voltage between the anode electrode 3 and the electron source 2. The phosphor layer 4 includes a plurality of phosphors having different excited energy dependence of light intensity. The control device 5 for exciting the gas without discharging the gas by controlling voltage between the surface electrode 27 and the lower electrode 25 of the electron source 2 so as to make peak energy of an energy distribution of the electrons larger than excited energy of the gas and to make the peak energy of the energy distribution of the electrons smaller than ionized energy of the gas. COPYRIGHT: (C)2011,JPO&INPIT |
