发明授权
- 专利标题: Fluorescent screens of color picture tubes and manufacturing method therefor
- 专利标题(中): 彩色显像管荧光屏及其制造方法
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申请号: US142360申请日: 1987-12-28
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公开(公告)号: US4855200A公开(公告)日: 1989-08-08
- 发明人: Yoshifumi Tomita , Masahiro Nishizawa , Saburo Nonogaki
- 申请人: Yoshifumi Tomita , Masahiro Nishizawa , Saburo Nonogaki
- 申请人地址: JPX Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX56-43918 19810327
- 主分类号: H01J9/227
- IPC分类号: H01J9/227 ; H01J29/28
摘要:
A high contrast and brightness fluorescent screen of a color picture tube has a light absorbing layer in the form of fine dots or stripes provided for the inner surface of a panel of the tube on which the phosphor layer is formed, and a light reflection layer provided at an interface between the light absorbing layer and the phosphor layer. To manufacture the fluorescent screen, a photosensitive resin layer coated on an inner surface of the panel is exposed to light through a photomask mounted on outside of the panel to form a pattern. Nonluminous light absorbing substance is applied on the pattern to form the light absorbing layers.
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