| 摘要 |
A cathode ray tube includes a front side glass panel, a fluorescent screen formed on an inside surface of the panel, a funnel connected to the panel, forming a vacuum tube, an electron gun embedded in the funnel, a deflection yoke for deflecting electron beams emitted from the electron gun in horizontal and vertical directions, and a shadow mask for discriminating the electron beams in colors, in which a diagonal curvature radius (Rd), thickness (t), and effective diagonal length (D) of the shadow mask satisfy a condition of <math-cwu id="MATH-US-00001"> <NUMBER>1</NUMBER> <MATH> <MROW> <MROW> <MN>9</MN> <MO>,</MO> <MN>000</MN> </MROW> <MO>≤</MO> <MROW> <MI>Rd</MI> <MO>x</MO> <MFRAC> <MROW> <MN>391</MN> <MO>⁢</MO> <MSTYLE> <MTEXT> </MTEXT> </MSTYLE> <MO>⁢</MO> <MI>mm</MI> </MROW> <MROW> <MI>D</MI> <MO>x</MO> <MI>t</MI> </MROW> </MFRAC> </MROW> <MO>≤</MO> <MROW> <MN>10</MN> <MO>,</MO> <MN>000.</MN> </MROW> </MROW> </MATH> <mathematica-file id="MATHEMATICA-00001" file="US20050046327A1-20050303-M00001.NB"/> <image id="EMI-M00001" wi="216.027" he="17.03835" file="US20050046327A1-20050303-M00001.TIF" imf="TIFF" ti="MF"/> </MATH-CWU>
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