- 专利标题: Carbon black coating for CRT display screen with uniform light absorption
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申请号: US09864063申请日: 2001-05-23
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公开(公告)号: US06623662B2公开(公告)日: 2003-09-23
- 发明人: Kuo-Chu Wang , Chun-Min Hu
- 申请人: Kuo-Chu Wang , Chun-Min Hu
- 主分类号: B05D512
- IPC分类号: B05D512
摘要:
A two-layer coating for the outer surface of the display screen of a color cathode ray tube (CRT) includes an inner carbon black-based layer and an outer silica-based layer. The inner layer is antistatic, while the outer layer is antireflective. To compensate for the increased absorption of blue light by the carbon black particles, which results in a color video image having a yellowish tint, a blue additive, such as a pigment or dye, is added to the coating to adjust its light absorbance characteristics and provide uniform light absorbance over the entire visible spectrum of 400-700 nm for improved color video image presentation.
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