Driver circuit and processing device
AssigneeNichia Corporation
InventorHideki Kondo
Life of this patent
Estimating the term…
Abstract
A driver circuit includes: a variable power supply configured to apply a power supply voltage to a light emitting device and to vary a voltage value of the power supply voltage; a current-control switching device electrically connected to the light emitting device and configured to control a current flowing in the light emitting device; a detection part configured to detect a current value and a voltage value related to the current flowing in the light emitting device; and a control part configured to determine a minimum voltage of the power supply voltage based on a detection result of the detection part.
Claims6
A driver circuit comprising:
- a variable power supply configured to apply a power supply voltage to a light emitting device and to vary a voltage value of the power supply voltage;
- a current-control switching device electrically connected to the light emitting device and configured to control a current flowing in the light emitting device;
- a detection part configured to detect a current value and a voltage value related to the current flowing in the light emitting device;
- and
- a control part configured to determine a minimum voltage of the power supply voltage based on a detection result of the detection part.
A processing device comprising:
- a light emitting device;
- and
- a driver circuit configured to drive the light emitting device and comprising:
- a variable power supply configured to apply a power supply voltage to the light emitting device and to vary a voltage value of the power supply voltage;
- a switching device for current-control electrically connected to the light emitting device and configured to control a current flowing in the light emitting device;
- a detection part configured to detect a current value and a voltage value related to the current flowing in the light emitting device;
- and
- a control part configured to determine a minimum voltage of the power supply voltage based on a detection result of the detection part.
Dependencies are inferred from the claim text.