Mask in color cathode ray tube
AssigneeLG Electronics Inc.
InventorByoung Nam Kim
Life of this patent
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Abstract
Mask in a color cathode ray tube, including electron beam pass through holes with bridges connected to non-hole portions between the beam pass through holes in a width direction, wherein a thickness of the bridge of the mask facing an electron gun is formed thinner than other portions of the mask, thereby attenuating howling and enhancing luminance.
Claims11
A mask in a color cathode ray tube, comprising electron beam pass through holes with bridges connected to non-hole portions between the beam pass through holes in a width direction, wherein a side of said mask having a substantially even surface faces a screen of said color cathode ray tube, and an opposite side of said mask having an uneven surface comprising both recessed portions and portions that are raised relative to said recessed portions faces an electron gun, and a thickness of a bridge of the mask facing the electron gun is formed thinner than other portions of the mask.
A mask in a color cathode ray tube, comprising electron beam pass through holes with bridges connected to non-hole portions between the beam pass through holes in a width direction, wherein:
- a side of said mask having a substantially even surface faces a screen of said color cathode ray tube, and an opposite side of said mask having an uneven surface comprising both recessed portions and portions that are raised relative to said recessed portions faces an electron gun;
- a thickness of the bridge of the mask facing the electron gun is formed thinner than other portions of the mask;
- a thickness of a portion in the vicinity of the beam pass through hole inclusive of a bridge is formed thinner than other portions;
- and
- the bridge or a portion in the vicinity of the beam pass through hole inclusive of the bridge is recessed by etching.
Dependencies are inferred from the claim text.