Color cathode ray tube with prescribed neck thickness
AssigneeLG Electronics Inc.
InventorYoun-Jin Kim
Life of this patent
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Abstract
A color cathode ray tube having a panel to which a fluorescent layer is applied, a slim neck portion with an electron gun, a funnel joined to the panel, and a stem with the electron gun sealed to the neck portion, wherein if an inner diameter of the neck portion and an outer diameter of the stem equal a and f, respectively, an interval between the neck portion's inner diameter and the stem's outer circumference meets the condition of 0.2≦(a−f)/2≦3.0, and the neck portion's outer diameter equals 23.0 mm to 28.5 mm.
Claims5
A color cathode ray tube having:
- a panel to which a fluorescent layer is applied,
- a neck portion with an electron gun,
- a funnel joined to the panel, and
- a stem with the electron gun sealed to the neck portion,
- wherein an outer diameter of the neck portion and a thickness of the neck portion equal b and t, respectively, satisfying the condition of 0.08 b mm≦t≦0.1 b mm, and an outer diameter of the neck portion is 23.0 to 28.5 mm.
A color cathode ray tube (CRT) having a panel to which a fluorescent layer is applied, a slim neck portion with an electron gun, a funnel joined to the panel, a stem with the electron gun sealed to the neck portion, and said neck portion having an outer diameter between 23 mm and 28.5 mm wherein,
- before said stem is sealed to said neck portion, said neck portion has an inner diameter of a mm, and said stem has an outer diameter of f mm being defined as 0.2 mm≦(a−f)/2≦3.0 mm and said neck portion has an outer diameter of b mm, and a thickness of t mm being defined as 0.08 mm≦t≦0.1 b mm.
Dependencies are inferred from the claim text.