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US 5,861,708 AGranted
Color cathode ray tube
AssigneeU.S. Philips Corporation
InventorArnoldus H. M. Van Eck
Life of this patent
Estimating the term…
Abstract
A color cathode ray tube includes an in-line electron gun. The electron gun includes at least a tubular part which is composed of two (or more) folded portions which are secured to each other.
Claims15
A color cathode ray tube comprising:
- an in-line electron gun having means for generating three coplanar electron beams and at least one electrode which includes a substantially flat grid with apertures for allowing passage of the electron beams, and a tubular part which is connected to said flat grid, characterized in that the tubular part is composed of at least two separate folded portions which extend parallel to the electron beams, and means for securing the two folded portions to one another so that they are interconnected.
An in-line electron gun for use in a color cathode ray tube comprising:
- cathode means for generating three coplanar electron beams and at least one electrode which includes a substantially flat grid with apertures for allowing passage of the electron beams,
- a tubular part connected to said flat grid and composed of at least two folded members which extend parallel to the electron beams, and
- means for securing the two folded members to one another so that they are interconnected.
A color cathode ray tube comprising:
- an evacuated envelope having a display window,
- an in-line electron gun mounted within said evacuated envelope for generating three electron beams,
- a display screen on the inside of the display window and comprising a pattern of luminescing phosphor elements,
- a deflection unit mounted on the outside of the evacuated envelope between the electron gun and the display screen,
- a thin plate with apertures positioned within said evacuated envelope in the vicinity of the display screen and closer to the electron gun, wherein
- the electron gun comprises;
- at least one electrode which includes a substantially flat grid with apertures for allowing passage of the electron beams,
- a tubular part connected to said flat grid and composed of at least first and second folded members which extend parallel to the electron beams, and
- means for securing the first and second folded members together so that they form said tubular part.
6 more elements
Dependencies are inferred from the claim text.