Flexible circuits configured for heat spreading in a wearable display
AssigneeGoogle Inc.
InventorsJoshua Moore, Emil Rahim
Life of this patent
Estimating the term…
Abstract
A head-worn display (HWD) configured to provide an extended reality (XR) image to a user include includes a flexible circuitry configured to electrically couple a component of the HWD to a processor or power source. Additionally, this flexible circuit includes a heat tab configured to thermally couple the flexible circuit to the component of the HWD. Due to the flexible circuitry being thermally coupled to the component of the HWD, heat generated by the component of the HWD is spread across the surfaces of the flexible circuitry, lowering the temperature of the component.
Claims20
A wearable display, comprising:
- a support structure;
- a light engine configured to emit light representative of an image;
- a lightguide to direct the light representative of the image to an eye of a user;
- a circuitry configured to provide a first functionality;
- and
- a flexible circuit arranged so that:
- the flexible circuit is electrically coupled, at a first end, to the circuitry and, at a second end, to a processor or a power source;
- the flexible circuit is thermally coupled, at the first end, to the circuitry;
- and
- a portion of the flexible circuit between the first end and the second end is in direct contact with a portion of the support structure such that heat generated by the circuitry is spread across the portion of the structure.
A flexible circuit for a wearable display, comprising:
- a first end connected to circuitry providing a functionality of the wearable display;
- a second end connected to a processor or power source of the wearable display;
- a flexible electrically conductive layer configured to electrically couple the circuitry to the processor or the power source;
- and
- a thermal tab disposed at the first end and configured to thermally and mechanically couple the circuitry to the flexible circuit such that heat generated by the circuitry is spread across a surface of the flexible circuit, wherein the flexible circuit is configured to run along a least a portion of a support structure of the wearable display.
A method, comprising:
- electrically coupling, within a wearable display and by a flexible circuit, circuitry of the wearable display configured to provide a functionality of the wearable display to a processor or power source of the wearable display, a portion of the flexible circuit between the circuitry in contact with at least a portion of a support structure of the wearable display;
- and
- thermally coupling the circuitry to the flexible circuit such that heat generated by the circuitry is spread across a surface of the flexible circuit and the at least a portion of the support structure.
Dependencies are inferred from the claim text.