Electron gun having blackened grids used in-line type color CRT, and color CRT using the same
AssigneeKabushiki Kaisha Toshiba
InventorsToshio Shimaohgi, Hideo Mori, Tadanori Okada
Life of this patent
Estimating the term…
Abstract
An in-line type color CRT electron gun having a triode and a plurality of grids, characterized in that at least one of the plurality of grids is made of a black member or a member on which a black film is formed. The time required for attaining a stable temperature of the member is reduced, thereby improving deviations in static convergence and reducing the time required for an image to be normally displayed.
Claims8
An in-line type color CRT electron gun comprising a triode and a plurality of grids, wherein at least one of said plurality of grids is composed of a black member or a member on which a black film is formed and wherein an emissivity of said black member or black film is 0.3 or more when an emissivity of a perfect black body is 1.
An in-line type color CRT using an electron gun comprising a triode and a plurality of grids, wherein at least one of said plurality of grids is composed of a black member or a member on which a black film is formed, and wherein an emissivity of said black member or black film is 0.3 or more when an emissivity of a perfect black body is 1.
Dependencies are inferred from the claim text.