发明名称 |
Projection cathode-ray tube with interference film |
摘要 |
A projection cathode-ray tube includes a multilayered interference film interposed between a face plate and a cathode-ray tube. In order to improve brightness in a direction of the normal, then on a face plate, a phosphor layer is composed of a first layer substantially consisting of large size phosphor particles and a second layer substantially consisting of small size phosphor particles. In addition, a phosphor density of the phosphor layer is set from 20 to 50% larger than that necessary to produce a maximum brightness on a cathode-ray tube without the multilayered interference film. The phosphor particles of the phosphor layer are preferably material having a high reflectance.
|
申请公布号 |
US5166577(A) |
申请公布日期 |
1992.11.24 |
申请号 |
US19910704960 |
申请日期 |
1991.05.23 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
NAGAO, CHIE;HASHIMOTO, NORITSUNA;OKUDA, HIROSHI;IWASAKI, YASUO |
分类号 |
H01J29/18;H01J29/26;H01J31/10 |
主分类号 |
H01J29/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|