Semiconductor device manufacturing: process – Making device or circuit emissive of nonelectrical signal
Reexamination Certificate
2006-10-31
2006-10-31
Mulpuri, Savitri (Department: 2812)
Semiconductor device manufacturing: process
Making device or circuit emissive of nonelectrical signal
C438S025000, C438S099000, C438S106000
Reexamination Certificate
active
07129102
ABSTRACT:
The present invention uses plastic film in vacuum sealing an OLED. Inorganic insulating films which can prevent oxygen or water from being penetrated therein and an organic insulating film which has a smaller internal stress than that of the inorganic insulating films are laminated on an inside of the plastic film. By sandwiching the organic insulating film between the inorganic insulating films, a stress can be relaxed. Further, by laminating a plurality of inorganic insulating films, even if one of the inorganic insulating films has a crack, the other inorganic insulating films can effectively prevent oxygen or water from being penetrated into an organic light emitting layer. Further, the stress of the entire sealing film can be relaxed and cracking due to the stress takes place less often.
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Cook Alex McFarron Manzo Cummings & Mehler, Ltd.
Mulpuri Savitri
Semiconductor Energy Laboratory Co,. Ltd.
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