Illumination – Light source or light source support and luminescent material
Reexamination Certificate
2007-07-24
2007-07-24
O'Shea, Sandra (Department: 2875)
Illumination
Light source or light source support and luminescent material
C315S169300, C315S169100, C313S506000
Reexamination Certificate
active
10678350
ABSTRACT:
Electroluminescent panels for use in battery operated devices include a driver circuit and a plurality of panel regions having a capacitance. Each panel region has a substitute capacitor with a capacitance substantially equal to the capacitance of the panel region concerned. The driver circuit switches between the panel region and the substitute capacitor, switching the panel region on and off. The capacitance of the load on the driver circuit does not change. The electroluminescent panels can have an elimination layer that eliminates noise produced by the emission layer in operation caused by changes in emission layer thickness. The elimination layer is added to the panel and operated in phase opposition to the emission layer. Changes in layer thickness occurring in operation in the emission layer are offset by changes in thickness in the elimination layer. Thus, the overall thickness of the panel is constant.
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Burger Victor
Van Walstijn Bartholomeus Gerardus Gosewinus
O'Shea Sandra
Truong Bao Q.
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