SYSTEM FOR COOLING AN INTEGRATED CIRCUIT WITHIN A COMPUTING DEVICE

• US 20150029658A1
• Filed: 02/19/2014
• Published: 01/29/2015
• Est. Priority Date: 01/04/2008
• Status: Abandoned Application

• Current Assignee: Tactus Technology Inc.
• Original Assignee: Tactus Technology Inc.
• Inventors: Yairi, Micah, Ciesla, Craig, Constantine, Perry George, Weigand, Dave Lind
• Application Number:
  US14/184,460
• Publication Number:
  US 20150029658A1
• Time in Patent Office: Days
• US Class Current: 361/679.47
• CPC Class Codes: G06F 1/1643 the display being associated to a digitizer, e.g. laptops that can be used as penpads details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615
• CPC Class Codes: G06F 1/20 Cooling means
• CPC Class Codes: G06F 1/203 for portable computers, e.g. for laptops
• CPC Class Codes: G06F 2200/201 Cooling arrangements using cooling fluid
• CPC Class Codes: H05K 1/0212 Printed circuits or mounted components having integral heating means
• CPC Class Codes: H05K 7/20272 Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds
• CPC Class Codes: H05K 7/20281 Thermal management, e.g. liquid flow control

Abstract

One variation of a system for cooling an electrical component within a computing device—including a digital display—includes: an internal heatsink thermally coupled to the integrated circuit and defining a fluid passage including a first end and a second end; a heat exchange layer arranged across a viewing surface of the digital display, including a transparent material, and defining a fluid channel extending across a portion of the digital display, the fluid channel including a fluid inlet coupled to the first end of the fluid passage and a fluid outlet coupled to the second end of the fluid passage; a transparent fluid; and a displacement device configured to circulate the transparent fluid between the internal heatsink and the fluid channel.

Claims

1. A system for cooling an integrated circuit within a computing device including a digital display, the system comprising:

an internal heatsink thermally coupled to the integrated circuit and defining a fluid passage comprising a first end and a second end;

a heat exchange layer arranged across a viewing surface of the digital display, comprising a transparent material, and defining a fluid channel extending across a portion of the digital display, the fluid channel comprising a fluid inlet coupled to the first end of the fluid passage and a fluid outlet coupled to the second end of the fluid passage;

a transparent fluid; and

a displacement device configured to circulate the transparent fluid between the internal heatsink and the fluid channel.

2. The system of claim 1, wherein the heat exchange layer comprises a glass substrate bonded to a touch sensor arranged over the digital display, the glass substrate and the touch sensor layer cooperating to define the fluid channel.

3. The system of claim 2, further comprising a pressure relief valve arranged between the internal heatsink and the heat exchange layer and configured to open in response to fluid pressure in the fluid channel exceeding a threshold pressure.

4. The system of claim 1, wherein the heat exchange layer is arranged over the digital display defining a rectangular viewing area, the fluid channel extending across the digital display with the fluid inlet proximal a first short edge of the rectangular viewing area and the fluid outlet proximal a second short edge of the rectangular viewing area opposite the first short edge.

5. The system of claim 4, wherein the heat exchange layer defines a second fluid channel comprising a second fluid inlet and a second fluid outlet fluidly coupled to the internal heatsink, the second fluid channel extending across the digital display with the second fluid inlet proximal a first long edge of the rectangular viewing area and the second fluid outlet proximal a second long edge of the rectangular viewing area opposite the first long edge.

6. The system of claim 5, wherein the displacement device is configured to circulate the transparent fluid between the internal heatsink and the fluid channel when the computing device is oriented with the rectangular viewing area in a landscape position and to circulate the transparent fluid between the internal heatsink and the second fluid channel when the computing device is oriented with the rectangular viewing area in a portrait position.

7. The system of claim 6, wherein the displacement device comprises a valve arranged between the fluid channel and the second fluid channel, and further comprising a processor configured to set a position of the valve in response to an output of a motion sensor arranged within the computing device.

8. The system of claim 5, wherein the displacement device is configured to selectively circulate the transparent fluid between the internal heatsink and the fluid channel and between the internal heatsink and the second fluid channel based on a temperature gradient across the computing device.

9. The system of claim 1, further comprising a second heat exchange layer arranged across ventral exterior surface of the computing device opposite the digital display, the second heat exchange layer defining a second fluid channel fluidly coupled to the first fluid channel, wherein the displacement device is configured to circulate the transparent fluid between the fluid channel and the second fluid channel when a temperature of the digital display exceeds a threshold temperature.

10. The system of claim 1, wherein the heat exchange layer defines a set of parallel fluid channels, an inlet manifold, and an outlet manifold, the set of fluid channels comprising the fluid channel, and each fluid channel in the set of fluid channels originating at the inlet manifold and terminating at the outlet manifold.

11. The system of claim 10, wherein the inlet manifold and the outlet manifold are arranged over a bezel area of the computing device adjacent a viewing area of the digital display.

12. The system of claim 1, further comprising:

a substrate of a substantially transparent material, arranged over the heat exchange layer opposite the display, and defining a second fluid channel and a fluid conduit fluidly coupled to the second fluid channel, the second fluid channel fluidly decoupled from the fluid channel,

a tactile layer of a substantially transparent material and comprising a peripheral region coupled to the substrate and a deformable region arranged over the fluid conduit and disconnected from the substrate, and

a second displacement device coupled to the second fluid channel and configured to displace fluid through the fluid channel to transition the deformable region from a retracted setting to an expanded setting, the deformable region elevated above the peripheral region in the expanded setting.

13. The system of claim 1, wherein the heat exchange layer comprises a substrate and an elastomer layer, the substrate defining an open trough extending across a surface of the substrate, and the elastomer layer comprising a peripheral region coupled to the surface of the substrate and a deformable region arranged over the open trough to define the fluid channel, wherein the deformable region is configured to expand outwardly above the peripheral region in response to increased fluid pressure within the fluid channel.

14. The system of claim 1, wherein the displacement device is configured to circulate the transparent fluid between the internal heatsink and the fluid channel at a working pressure corresponding to a measured temperature of the integrated circuit.

15. The system of claim 1, wherein the displacement device and the internal heatsink cooperate to define a passive heat pipe.

16. The system of claim 1, wherein the heat exchange layer comprises a transparent elastomer of a first refractive index at a wavelength of light, and wherein the transparent fluid comprises an oil of a second refractive index substantially similar to the first refractive index at the wavelength of light.

17. The system of claim 1, wherein the internal heatsink comprises a shell configured to cooperate with a printed circuit board within the computing device to enclose the integrated circuit, wherein the displacement device is configured flood the integrated circuit with transparent fluid.

18. The system of claim 1, wherein the internal heatsink comprises a metallic structure configured to shield electromagnetic interference from the integrated circuit.

19. The system of claim 1, wherein the internal heatsink defines a series of internal vanes within the fluid channel adjacent the integrated circuit, the vanes extending substantially parallel to a direction of flow of the transparent fluid through the fluid passage.

20. A system for cooling an electrical component within a computing device including a digital display, the system comprising:

an internal heatsink thermally coupled to the electrical component and defining a fluid passage comprising a first end and a second end;

a heat exchange layer arranged over the digital display, comprising a transparent material, defining a first fluid channel cooperating with the internal heatsink to define a first fluid circuit, and defining a second fluid channel cooperating with the internal heatsink to define a second fluid circuit;

a transparent fluid; and

a displacement device configured to circulate the transparent fluid within the first circuit in response to detected orientation of the computing device in a first position and to circulate the transparent fluid within the second circuit in response to detected orientation of the computing device in a second position.

21. The system of claim 20, wherein the displacement device comprises a valve arranged between the first fluid channel and the second fluid channel, and further comprising a sensor and a processor, the processor configured to detect an orientation of the computing device based on an output of the sensor and to set a position of the valve based on a detected orientation of the computing device.

22. The system of claim 20, wherein the displacement device is configured to circulate the transparent fluid within the first circuit in response to detected orientation of the computing device in the first position approximating a landscape orientation, and wherein the displacement device is configured to circulate the transparent fluid within the second circuit in response to detected orientation of the computing device in the second position approximating a portrait orientation.

23. The system of claim 20, wherein the first fluid channel extends over the viewing area of the display, and wherein the second fluid channel extends over a bezel adjacent a viewing area of the display.

24. A system for cooling an integrated circuit within a computing device, the system comprising:

an internal heatsink thermally coupled to the integrated circuit and defining a fluid passage comprising a first end and a second end;

a heat exchange layer arranged across an external surface of the computing device, and defining a fluid channel, the fluid channel comprising a fluid inlet coupled to the first end of the fluid passage and a fluid outlet coupled to the second end of the fluid passage;

a fluid; and

a displacement device configured to circulate the fluid between the internal heatsink and the fluid channel.

25. The system of claim 24, wherein the heat exchange layer across an opaque area of the computing device and a viewing surface of a digital display within the computing device, and wherein the fluid channel extends across a portion of the digital display.