Method and Apparatus for Blue Light Management via a Variable Light Emitting Diode Input
AssigneeDell Products L.P.
InventorsStefan Peana, Deeder M. Aurongzeb
Life of this patent
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Abstract
A first light emitting diode has a first driving input, and emits a red color light. A second light emitting diode has a second driving input, and emits a green color light. A third light emitting diode has a third driving input, and emits a blue color light. When a first current is applied to the third driving input, the third light emitting diode produces a first amount of blue light energy. When a second current is applied to the third driving input, the third light emitting diode produces a second amount of the blue light energy. The second amount of blue light energy corresponds to a percentage of blue energy reduction as compared to the amount of first blue light energy.
Claims19
A light emitting diode package comprising:
- a first light emitting diode having a first driving input, the first light emitting diode to emit red color light;
- a second light emitting diode having a second driving input, the second light emitting diode to emit green color light;
- and
- a third light emitting diode having a third driving input, the third light emitting diode to emit blue color light, wherein a first current applied to the third driving input produces a first amount of blue light energy, and a second current applied to the third driving input produces a second amount of the blue light energy less than the first amount of first blue light energy.
A method comprising:
- setting a blue light power level to a predefined level within each of a plurality of light emitting diode packages of a display within an information handling system, wherein the predefined blue light power level creates a first white light level;
- detecting a change in a contextual control variable for the light emitting diode packages;
- and
- reducing the blue light power level from the predefined level to a second level in response to the change in the contextual control variable, wherein the reduction of the blue light power level reduces an amount of blue light energy from the light emitting diode packages.
A light emitting diode package comprising:
- a first light emitting diode having a first driving input;
- a second light emitting diode having a second driving input;
- and
- a light emitting diode controller having a first output coupled to the first driving input, and a second output coupled to the second driving input, the light emitting diode controller to provide a first control signal to the first and second driving inputs to cause the first and second light emitting diodes to emit a predetermined white point, to provide a second control signal to the first light emitting diode, and a third control signal to the second light emitting diode, wherein the second and third control signals cause the first and second light emitting diodes to provide different wavelengths of blue light.
Dependencies are inferred from the claim text.