Micro display pixel driver controller
AssigneeJade Bird Display (Shanghai) Limited
InventorsJing JU, Hongyun LIU, Chunming LI
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Abstract
A pixel driver controller includes a reference current source configured to supply a reference current, a current mirror source configured to provide a mirror current, a first current switch coupled to the current mirror source to receive the mirror current, a pixel display data memory configured to store pixel display data coupled to the first current switch, a second current switch coupled to the first current switch, and a controller coupled to the second current switch and configured to control a switch-on status of the second current switch.
Claims20
A pixel driver controller, comprising:
- a reference current source configured to supply a reference current;
- a current mirror source, coupled to receive the reference current, configured to provide a mirror current having a current value equal to a current value of the reference current;
- a first current switch coupled to the current mirror source to receive the mirror current, the first current switch being further coupled to a light emitting diode (LED) device to control flow of the mirror current to the LED device;
- a pixel display data memory coupled to the first current switch and configured to store pixel display data;
- a second current switch coupled to the first current switch;
- and
- a controller coupled to the second switch and configured to control at least one of a global brightness or a gray scale level of the LED device by controlling a switch-on status of the second current switch.
A display back plane system, comprising:
- a power controller, and
- a pixel driving controller array, wherein the pixel driving controller array comprises:
- a reference current source configured to supply a reference current;
- a current mirror source, coupled to receive the reference current, configured to provide a mirror current having a current value equal to a current value of the reference current;
- a first current switch coupled to the current mirror source to receive the mirror current, the first current switch being further coupled to a light emitting diode (LED) device to control flow of the mirror current to the LED device;
- a pixel display data memory coupled to the first current switch and configured to store pixel display data;
- a second current switch coupled to the first current switch;
- and
- a processing time controller coupled to the second switch and configured to control at least one of a global brightness or a gray scale level of the LED device by controlling a switch-on status of the second current switch.
A display, comprising:
- a light emitting diode (LED);
- a reference current source configured to supply a reference current;
- a current mirror source, coupled to receive the reference current, configured to provide a mirror current having a current value equal to a current value of the reference current;
- a first current switch coupled to the current mirror source to receive the mirror current, the first current switch being further coupled to the LED device to control flow of the mirror current to the LED device;
- a pixel display data memory coupled to the first current switch and configured to store pixel display data;
- a second current switch coupled to the first current switch;
- and
- a controller coupled to the second switch and configured to control at least one of a global brightness or a gray scale level of the LED device by controlling a switch-on status of the second current switch.
Dependencies are inferred from the claim text.