Apparatus, system, and method for efficiently driving visual displays via light-emitting devices
AssigneeFacebook Technologies, LLC
InventorsYuming Liu, Xiaobei Li, Lawrence Chang-Yung Wang, Sam Sarmast, Phillip Freeman King, Benjamin Nicholas Jones
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Abstract
An apparatus for efficiently driving visual displays via light-emitting devices may include (1) at least one light-emitting device, (2) a buck driver circuit electrically coupled to the light-emitting device, wherein the buck driver circuit includes an inductor, and (3) a boost circuit electrically coupled between the buck driver circuit and a power source, wherein the boost circuit includes an additional inductor. Various other apparatuses, systems, and methods are also disclosed.
Claims19
An apparatus comprising:
- at least one light-emitting device;
- a buck driver circuit electrically coupled to the light-emitting device, wherein the buck driver circuit includes an inductor and a diode, the inductor being electrically coupled between the light-emitting device and the diode such that the buck driver circuit is directly coupled to the light-emitting device via the inductor;
- and
- a boost circuit electrically coupled between the buck driver circuit and a power source, wherein the boost circuit includes an additional inductor and an additional diode, the additional inductor being electrically coupled between the power source and the additional diode.
A system comprising:
- a visual display that includes at least one light-emitting device;
- a buck driver circuit electrically coupled to the light-emitting device included in the visual display, wherein the buck driver circuit includes an inductor and a diode, the inductor being electrically coupled between the light-emitting device and the diode such that the buck driver circuit is directly coupled to the light-emitting device via the inductor;
- and
- a boost circuit electrically coupled between the buck driver circuit and a power source, wherein the boost circuit includes an additional inductor and an additional diode, the additional inductor being electrically coupled between the power source and the additional diode.
A method comprising:
- assembling a buck driver circuit that includes an inductor and a diode;
- assembling a boost circuit that includes an additional inductor and an additional diode;
- electrically coupling the buck driver circuit to at least one light-emitting device included in a head-mounted display dimensioned to be worn by a user of an artificial reality system such that the inductor is electrically coupled between the light-emitting device and the diode such that the buck driver circuit is directly coupled to the light-emitting device via the inductor;
- and
- electrically coupling the boost circuit between the buck driver circuit and a power source such that the additional inductor is electrically coupled between the power source and the additional diode.
Dependencies are inferred from the claim text.