发明授权
US5045750A Color picture tube having a phosphor screen with a semitransparent black light absorption 失效
彩色显象管具有具有半透明黑光吸收的荧光屏

Color picture tube having a phosphor screen with a semitransparent black
light absorption
摘要:
A color picture tube includes a vacuum envelope having a faceplate, a phosphor screen formed to include semitransparent black light-absorption layers coated on a first region of the faceplate in stripes or in a matrix, and phosphor layers of blue, red and green emitting phosphors coated on a second region of the faceplate in stripes or in dots, and an electron gun, arranged within the vacuum envelope, for emitting and focusing electron beams. End portions of the phosphor layers extend over the black light-absorption layers, thereby forming overlapped portions. Gaps are provided between the phosphor layers and over the black light-absorption layers, thereby forming light-absorption sections on which no phosphor layer is provided.
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