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US 2006/0232524 A1Published application
Variable power control for OLED area illumination
AssigneeEastman Kodak Company
InventorRonald Cok
Life of this patent
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Abstract
An OLED area illumination apparatus, comprising an OLED device, a variable power controller connected to the OLED device for providing variable power to the OLED device and responsive to a control signal, a feedback circuit for measuring the resistance of the OLED device and using the measurement signal for providing a control signal to control the variable power controller.
Claims19
An OLED area illumination apparatus, comprising:
- (a) an OLED device;
- (b) a variable power controller connected to the OLED device for providing variable power to the OLED device and responsive to a control signal;
- and
- (c) a feedback circuit for measuring the resistance of the OLED device and using said measurement signal for providing a control signal to control the variable power controller.
1 more element
A method of providing power to an OLED area illumination apparatus, comprising:
- (a) providing an OLED device;
- (b) passing current through the OLED device;
- (c) measuring the resistance of the OLED device;
- and
- (d) modifying the current passed through the OLED device in response to the measured resistance.
2 more elements
Dependencies are inferred from the claim text.