Light exposing device for forming black matrixes in cathode ray tubes
US5685760A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 26, 1995 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Dec 26, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/2272
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light exposing device for fixing a black matrix on the internal surface of a CRT's panel is disclosed. The device includes green, blue and red light exposing units arranged in a casing one after another. Each exposing unit has a light source, a shutter, a compensating lens and a filter. A chucking unit is placed at each side of the device for selectively chucking a plurality of panels seated on the exposing units. The chucking unit is operated by a driving unit so as to move the panels on the device by one pitch. Initial and final waiting sections are provided before the green light exposing unit and after the red light exposing unit, respectively. On the waiting sections, the panels before exposing and after exposing stand by ready to be fed to the green light exposing unit and to be fed to a following process, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.