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US 2004/0001916 A1Published application
Cesium dispensers and process for the use thereof
AssigneeSaes Getters S.P.A.
InventorsClaudio Boffito, Luca Toia, Lorena Cattaneo
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Abstract
Cesium dispensers based on the use of a mixture between a reducing agent and a cesium compound selected among molibdate, tungstate, niobate, tantalate, silicate and zirconate are described. Some processes for the use of these dispensers are also described.
Claims18
Cesium dispenser (10;
- 30;
- 40) formed of a container capable of retaining solid particles, but having at least a portion (14;
- 32;
- 42) of the surface permeable to cesium vapors and containing a mixture (16;
- 44) of at least one cesium compound and at least one reducing agent, characterized in that the cesium compound is selected among molibdate, tungstate, niobate, tantalate, silicate and zirconate.
2 more elements
A process for the use of cesium dispensers according to one of the previous claims in the production of screens of OLED type formed of a first transparent support, a first set of electrodes, an organic multilayer, a second set of electrodes and a second support, comprising the steps of:
- introducing a cesium dispenser in a chamber with controlled atmosphere and provided with means for heating the same;
- arranging in said chamber a production intermediate of the OLED screen as obtained after having formed the organic multilayer;
- causing the evaporation of cesium from the dispenser by heating the latter;
- and
- carrying out the subsequent production steps of the OLED screen up to its sealing with the second support.
2 more elements
Dependencies are inferred from the claim text.