Low power micro-led driver for high bandwidth short distance communication
AssigneeHyperlume Inc.
InventorsMorteza Nabavi, Hossein Fariborzi, Abdolreza Nabavi, Mohsen Asad
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Abstract
A driver circuit for supplying and regulating power to a micro light-emitting diode (micro-LED), the driver circuitry comprising: at least one inverter; a first capacitance; a resistor coupled to ground; a fast switch comprising at least one first transistor; and a slow switch comprising at least one second transistor; whereby at least one of a rising time, a peaking effect, and LED power is increased.
Claims20
A driver circuit for supplying and regulating power to a micro light-emitting diode (micro-LED), the driver circuitry comprising:
- at least two inverters;
- an RC current shaping circuit comprising a first capacitance and a resistor coupled to ground;
- a first switch;
- and
- a second switch;
- whereby at least one of a rising time, a peaking effect, and the micro-LED's power is increased.
A driver circuit for supplying and regulating power to a micro light-emitting diode (micro-LED), the driver circuitry comprising:
- at least one inverter;
- a first capacitance;
- a first switch;
- a booster comprising a second capacitance and a second switch to increase a current and a high voltage of the first switch, thereby improving the power of the first switch to increase the rise time and the peaking effect.
A driver circuit for supplying and regulating power to a micro light-emitting diode (micro-LED), the driver circuit comprising:
- at least one first inverter;
- a first capacitance;
- a first switch;
- at least two second inverters, whereby a floating negative voltage is applied between the micro-LED and the first switch.
A driver circuit for supplying and regulating power to a micro light-emitting diode (micro-LED), the driver circuit comprising:
- at least one first inverter;
- a first switch comprising at least one first transistor;
- a shunt transistor to improve a sweep-out effect of a modulated current in the micro-LED's active region when an electrical pulse is turned on and off.
A method comprising the steps of:
- generating, using driving circuitry, a drive current to supply to a micro light-emitting diode (micro-LED);
- modulating the drive current;
- increasing a rising time and a peaking effect of the modulated drive current.
Dependencies are inferred from the claim text.