Cathode ray tube
AssigneeSamsung SDI Co., Ltd.
InventorsDo-Hun Pyun, Sung-Hun Ji, Yeun-Gil Choi, Soon-Dong Jeong, Joon-Soo Bae
Life of this patent
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Abstract
A cathode ray tube includes a panel with inner and outer surfaces, a funnel connected to the panel, a neck connected to the rear of the funnel, and a shadow mask mounted within the panel. The inner surface of the panel satisfies the following condition: 0.2≦Px≦0.4, 0.3≦Py≦0.6 where when the inner surface of the panel is expressed by the following biquadratic: z ( x , y ) = ∑ i , j = 0 , 2 , 4 A i , j x i y j , based on the central point of the inner surface of the panel with the three-dimensional orthogonal coordinates system defined by the x, y and z axes, Px and Py are defined by the following formula: Px = A 20 A 20 + A 40 , Py = A 02 A 02 + A 04
Claims11
A cathode ray tube comprising:
- a panel including an inner surface and an outer surface;
- a funnel having a rear and a front and connected to the panel at the front;
- a neck connected to the rear of the funnel;
- and
- a shadow mask mounted within the panel;
- wherein the inner surface of the panel satisfies the following condition:
- 0.2≦Px≦0.4, 0.3≦Py≦0.6
- where when the inner surface of the panel is expressed by the following biquadratic
- z
-
-
- (
- x
- ,
- y
- )
- =
- ∑
- i
- ,
- j
- =
- 0
- ,
- 2
- ,
- 4
-
-
- A
- i
- ,
- j
-
- x
-
- i
-
- y
-
- j
- where Ai,j are constants, based on the inner central point of the panel with the three-dimensional orthogonal coordinates system defined by the x, y and z axes, Px and Py are defined by the following formula:
- Px
- =
- A
- 20
- A
- 20
- +
- A
- 40
- ,
-
- Py
- =
- A
- 02
- A
- 02
- +
- A
- 04
- .
A panel for a cathode ray tube comprising:
- an outer surface;
- and
- an inner surface, wherein the inner surface satisfies the following condition:
- 0.2≦Px≦0.4, 0.3≦Py≦0.6
- where when the inner surface of the panel is expressed as
- z
-
-
- (
- x
- ,
- y
- )
- =
- ∑
- i
- ,
- j
- =
- 0
- ,
- 2
- ,
- 4
-
-
- A
- i
- ,
- j
-
- x
-
- i
-
- y
-
- j
- where Ai,j are constants, based on the inner central point of the panel in a three-dimensional orthogonal coordinates system defined by the x, y and z axes, Px and Py are defined by the following formula:
- Px
- =
- A
- 20
- A
- 20
- +
- A
- 40
- ,
- Py
- =
- A
- 02
- A
- 02
- +
- A
- 04
- .
Dependencies are inferred from the claim text.