FLUORESCENT LAMP, BACKLIGHT UNIT AND LIQUID CRYSTAL TELEVISION

摘要

The present invention relates to a fluorescent lamp, in particular, to a fluorescent lamp improved in starting characteristics in the dark. A fluorescent lamp has a glass bulb (101) having a discharge space inside thereof, external electrodes (102, 103) are formed in both end portions of the bulb, and a phosphor layer (106) is formed on the inner surface of the glass bulb. The glass bulb is formed of a glass having a sodium oxide content of 3 to 20 %. The phosphor layer contains phosphor particles (106R, 106G) containing no alumina and phosphor particles (106B) containing alumina. A metal oxide (107) is attached to the surface of the phosphor particles containing alumina. The sodium oxide precipitated on the inner surface of the above glass bulb improves starting characteristics in the dark. The phosphor particles containing alumina are protected by the metal oxide, since they are susceptible to the deterioration by the reaction with sodium oxide.