摘要:
The orientation of fluorescent lamps is detected in a manufacturing method for a direct backlight unit that alternates orientations of adjacent fluorescent lamps. In a preparation step of the manufacturing method for the backlight unit of the present invention, a plurality of fluorescent lamps are prepared. In each of the fluorescent lamps, a length (a1) from a first sealed portion of a glass bulb (26) to a non-phosphor layer (32) area is shorter than a length (a2) from a second sealed portion to a non-phosphor layer (32) area (a1
摘要:
A cold cathode fluorescent lamp includes a glass bulb (16), a protective film (22) formed on an inner face of the glass bulb, and a phosphor layer (24) that overlaps the protective film and that contains blue phosphor particles (26B), green phosphor particles (26) and red phosphor particles (26). The glass bulb has been formed from soda glass, and the blue phosphor particles have been coated with a metal oxide (30). Also, the protective film is made of silica (SiO2). Since the protective film has been provided in the fluorescent lamp and since the blue phosphor particles, which readily deteriorate, have been coated with the metal oxide, a good luminance maintenance rate is obtained. In addition, although the glass bulb of the fluorescent lamp is made of soda glass, since the protective film is made of silica, the fluorescent lamp obtains an initial luminance equivalent to the initial luminance of a fluorescent lamp whose glass bulb is made of borosilicate glass.
摘要:
A cold-cathode fluorescent lamp including a glass bulb, a pair of hollow electrodes, and a pair of electrically connected terminals. The hollow electrodes each include an electrode body and a lead wire. The hollow electrodes are hermetically connected to the glass bulb at both ends of the glass bulb. The pair of electrically connected terminals are thin coats that are, except for connection portions connected to lead wires, provided on an outer surface of the glass bulb at both ends of the glass bulb.
摘要:
A cold-cathode fluorescent lamp including a glass bulb, a pair of hollow electrodes, and a pair of electrically connected terminals. The hollow electrodes each include an electrode body and a lead wire. The hollow electrodes are hermetically connected to the glass bulb at both ends of the glass bulb. The pair of electrically connected terminals are thin coats that are, except for connection portions connected to lead wires, provided on an outer surface of the glass bulb at both ends of the glass bulb.
摘要:
A cold cathode fluorescent lamp has an improved heat dissipation characteristic without an overall increase in size, and a lead wire thereof does not readily break.The cold cathode fluorescent lamp (20) includes electrodes (28 and 30) composed of electrode main bodies (28a and 30a) that are located in an interior of a glass bulb (21), a lead wire (28b and 30b), the glass bulb (21) having ends into which the lead wires are sealed, and a heat dissipater (32 and 34) that is provided on an other portion of the lead wire, the other portion being outside the glass bulb 21. The portion of the heat dissipater surrounding the lead wire (28b and 30b) are in contact with the end surfaces (21c and 21d) of the glass bulb, when viewed externally along an extending direction of the lead wire.
摘要:
The present invention is a backlight unit 1 in which multiple substantially U-shaped lamps, to each of whose respective both end portions 11a and 11b an electrode 12 is attached, are disposed in parallel to one another in an envelope 20 in a manner that the end portions 11a and 11b of each lamp 10 face opposite to the end portions 11a and 11b of the adjacent lamp 10 and are positioned closer to a side wall 42/44 of the envelope 20 than a bent portion 13 of the adjacent lamp 10 is. Herewith, it is possible to offer the backlight unit 1 realizing reduced unevenness in luminance and requiring less power consumption.
摘要:
A cold-cathode fluorescent lamp including a glass bulb and a pair of electrodes which are cylindrical and respectively inserted in two ends of the glass bulb. Two end portions of the glass bulb are substantially circular in transverse cross section, the two end portions respectively corresponding to the inserted pair of electrodes in length. At least part of a middle portion of the glass bulb is flat in transverse cross section, the middle portion corresponding to a space in the glass bulb between the pair of electrodes.
摘要:
A cold-cathode fluorescent lamp including a glass bulb and a pair of electrodes which are cylindrical and respectively inserted in two ends of the glass bulb. Two end portions of the glass bulb are substantially circular in transverse cross section, the two end portions respectively corresponding to the inserted pair of electrodes in length. At least part of a middle portion of the glass bulb is flat in transverse cross section, the middle portion corresponding to a space in the glass bulb between the pair of electrodes.
摘要:
A fluorescent lamp including a glass bulb, a protection layer formed on an inner surface of the glass bulb, and a phosphor layer formed on a surface of the protection layer. The surface of the protection layer that is in contact with the phosphor layer has cracks. The bulk density of the metal oxide particles in the protection layer 32 is 80% or more. The surface of the protection layer 32 has 20 to 200 cracks per millimeter in a tube axis direction. The average particle diameter of the metal oxide particles is in the range from 0.01 μm to 1 μm. The thickness of the protection layer is in the range from 0.5 μm to 5 μm.
摘要:
A fluorescent lamp including a glass bulb, a protection layer formed on an inner surface of the glass bulb, and a phosphor layer formed on a surface of the protection layer. The surface of the protection layer that is in contact with the phosphor layer has cracks. The bulk density of the metal oxide particles in the protection layer 32 is 80% or more. The surface of the protection layer 32 has 20 to 200 cracks per millimeter in a tube axis direction. The average particle diameter of the metal oxide particles is in the range from 0.01 μm to 1 μm. The thickness of the protection layer is in the range from 0.5 μm to 5 μm.