IP Library Granted Patent US 11,393,794
Granted Patent B2
US 11,393,794 · App. 16/939,720 · Granted Jul 19, 2022

Microelectronic device assemblies and packages including surface mount components

Inventors: Randon K. Richards (Kuna, ID); Owen R. Fay (Meridian, ID); Aparna U. Limaye (Boise, ID); Dong Soon Lim (Boise, ID)
Assignee: Micron Technology, Inc.
H01L25/0657H01L21/78H01L22/12H01L23/552H01L23/645H01L23/66H01L24/08H01L24/80H01L25/0652H01L25/18H01L25/50H01Q1/2283H01Q1/48H01L2223/6677H01L2224/08145H01L2224/80895H01L2224/80896H01L2225/06531H01L2225/06537H01L2225/06548H01L2225/06586H01L2225/06589H01L2924/1431H01L2924/1436H01L2924/1443H01L2924/14511H01L2924/19041H01L2924/19042H01L2924/19043H01L2924/19105H01L2924/3025
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Quick Facts
Patent No.
US 11,393,794
App. No.
16/939,720
Granted
Jul 19, 2022
Kind
B2
Abstract

Disclosed is a microelectronic device assembly comprising a substrate having conductors exposed on a surface thereof. Two or more microelectronic devices are stacked on the substrate, each microelectronic device comprising an active surface operably coupled to conductive traces extending over a dielectric material to via locations beyond at least one side of the stack, at least one surface mount component operably coupled to conductive traces of at least one dielectric material, and vias extending through the dielectric materials at the via locations and comprising conductive material in contact with at least some of the conductive traces of each of the two or more electronic devices and extending to exposed conductors of the substrate.

Claims (26)

1. A microelectronic device assembly, comprising:

a substrate having conductors exposed thereon;

a stack of two or more microelectronic devices on the substrate, each microelectronic device comprising an active surface operably coupled to conductive traces carried by a separate dielectric film extending over the active surface thereof to via locations beyond a footprint of an associated microelectronic device;

at least one surface mount component operably coupled to conductive traces of at least one separate dielectric film, the at least one surface mount component being mounted to the at least one separate dielectric film at a location outside of the footprint of the associated microelectronic device; and

conductive vias extending through the separate dielectric films at the via locations in contact with at least some of the conductive traces of each of the stack of two or more microelectronic devices and extending to exposed conductors of the substrate.

2. The microelectronic device assembly of claim 1 , wherein the at least one surface mount component is located on an upper surface of the at least one separate dielectric film.

3. The microelectronic device assembly of claim 1 , wherein the at least one surface mount component is located on a lower surface of the at least one separate dielectric film.

4. The microelectronic device assembly of claim 1 , wherein the at least one surface mount component comprises at least two surface mount components located on opposite sides of the at least one separate dielectric film.

5. The microelectronic device assembly of claim 1 , wherein the at least one surface mount component is located on an uppermost separate dielectric film over at least one conductive via.

6. The microelectronic device assembly of claim 1 , wherein the at least one surface mount component is located on a separate dielectric film within the stack where no conductive vias are located.

7. The microelectronic device assembly of claim 1 , wherein at least one microelectronic device of the stack is smaller than at least one other adjacent microelectronic device of the stack and the at least one surface mount component is mounted to the separate dielectric film of the at least one smaller microelectronic device within a footprint of the at least one other adjacent microelectronic device of the stack.

8. The microelectronic device assembly of claim 1 , wherein the conductive traces carried by the separate dielectric films to via locations beyond a footprint of an associated microelectronic device comprise a fan-out package configured redistribution layer (FOP-configured RDL) structure.

9. The microelectronic device assembly of claim 1 , wherein the at least one surface mount component is a capacitor, an inductor, or a resistor.

10. The microelectronic device assembly of claim 9 , wherein the at least one surface mount component is formed on and operably coupled to one or more conductors on a separate dielectric film prior to fabrication of the microelectronic device assembly.

11. The microelectronic device assembly of claim 9 , wherein the at least one surface mount component is preformed prior to operable coupling to one or more conductors on a separate dielectric film.

12. The microelectronic device assembly of claim 1 , wherein the at least one surface mount component comprises at least two surface mount components located on different, separate dielectric films of the stack.

13. The microelectronic device assembly of claim 1 , each microelectronic device being:

operably coupled to one or more of the conductive traces carried by a separate dielectric film for power and ground\bias; and

further comprising structure for data signal communication through the stack of two or more microelectronic devices to the substrate.

14. The microelectronic device assembly of claim 13 , wherein power and ground/bias signal communication through the conductive traces and vias are ganged for all of the two or more microelectronic devices of the stack.

15. The microelectronic device assembly of claim 13 , wherein power and ground/bias communication through the conductive traces and vias are individualized for at least some of the two or more microelectronic devices of the stack.

16. The microelectronic device assembly of claim 1 , wherein the microelectronic devices comprise semiconductor dice.

17. The microelectronic device assembly of claim 16 , wherein at least two of the semiconductor dice exhibit different functionalities.

18. The microelectronic device assembly of claim 1 , further comprising separate polymer films through which the conductive vias extend, over the separate dielectric films and the conductive traces carried by the separate dielectric films.

19. The microelectronic device assembly of claim 1 , wherein the stack of two or more microelectronic devices and dielectric films is at least laterally surrounded by an EMC.

20. The microelectronic device assembly of claim 19 , further comprising a thermal interface material (TIM) on a top surface of an uppermost microelectronic device of the stack, and a heat sink structure on the TIM.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 11, 2021
From: LIMAYE, APARNA U.
To: MICRON TECHNOLOGY, INC.
Reel/Frame 056514/0734 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 27, 2020
From: FAY, OWEN R.; RICHARDS, RANDON K.; LIMAYE, APARNA U.; LIM, DONG SOON
To: MICRON TECHNOLOGY, INC.
Reel/Frame 053320/0717 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 27, 2020
From: FAY, OWEN R.; RICHARDS, RANDON K.; LIMAYE, APARNA U.; LIM, DONG SOON; YOO, CHAN H.; STREET, BRET K.; NAKANO, EIICHI; LUO, SHIJIAN
To: MICRON TECHNOLOGY, INC.
Reel/Frame 053323/0794 →
Continuity (3)
Provisional Application 62916371 · Oct 17, 2019
Provisional Application 63037902 · Jun 11, 2020
Related Publication 20210118851A1 · Apr 22, 2021