Two-axis vertical mount package assembly

• US 9,475,694 B2
• Filed: 01/14/2013
• Issued: 10/25/2016
• Est. Priority Date: 01/14/2013
• Status: Active Grant

• Current Assignee: Analog Devices International Unlimited Company (Analog Devices, Inc.)
• Original Assignee: Analog Devices Global Unlimited Company (Analog Devices, Inc.)
• Inventors: Martizon, Arturo Jr., Goida, Thomas M.
• Primary Examiner(s): Patel, Harshad R
• Assistant Examiner(s): Shah, Samir M
• Application Number:
  US13/741,198
• Publication Number:
  US 20140196540A1
• Time in Patent Office: 1,380 Days
• US Class Current: 1/1
• CPC Class Codes: B81B 7/0074 3D packaging, i.e. encapsulation containing one or several MEMS devices arranged in planes non-parallel to the mounting board
• CPC Class Codes: B81C 3/008 Aspects related to assembling from individually processed components, not covered by groups B81C3/001 - B81C3/002
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/48247 connecting the wire to a bond pad of the item
• CPC Class Codes: H01L 23/49555 the bent parts being the outer leads
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/00012 Relevant to the scope of the group, the symbol of which is combined with the symbol of this group
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/1461 MEMS
• CPC Class Codes: H01L 2924/181 Encapsulation
• CPC Class Codes: H01L 2924/1815 Shape
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing

Abstract

Vertical mount package assemblies and methods for making the same are disclosed. A method for manufacturing a vertical mount package assembly includes providing a base substrate having electrical connections for affixing to external circuitry, and providing a package having a mounting region configured to receive a device therein. Flexible electrical leads are formed between the base substrate and the package. The flexible leads can include a plurality of aligned grooves to guide bending. After forming the flexible electrical leads, the package is rotated relative to the base substrate. The aligned grooves can constrain the relative positions of the substrates during rotation, and the beveled edges of the base substrate and package can maintain a desired angular relationship (e.g., perpendicular) between the base substrate and the package after rotation.

Claims

1. A vertical mount package assembly comprising:

a base substrate having electrical connections for affixing to external circuitry;

a package having a device region configured to receive at least one device; and

a plurality of spaced apart electrical leads between the base substrate and the package, wherein the leads include aligned grooves, each groove comprising a surface recess to provide alignment between the base and the package, the grooves being aligned along a crease of the leads.

2. The vertical mount package assembly of claim 1, wherein the package is fixed in a position substantially perpendicular to the base substrate.

3. The vertical mount package assembly of claim 2, wherein the base substrate and the package each include beveled edges configured to mate.

4. The vertical mount package assembly of claim 2, wherein the package is fixed with an adhesive between the base substrate and the package.

5. The vertical mount package assembly of claim 4, wherein the adhesive comprises epoxy.

6. The vertical mount package assembly of claim 1, further comprising a MEMS die on the device region of the package.

7. The vertical mount package assembly of claim 6, wherein the plurality of electrical leads provide electrical communication between the MEMS die and the electrical connections of the base substrate.

8. The vertical mount package assembly of claim 6, wherein the base substrate further comprises an integrated circuit communicating with the electrical leads and the electrical connections.

9. The vertical mount package assembly of claim 6, wherein the MEMS die comprises at least one of:

an accelerometer and a gyroscope.

10. A method of manufacturing the vertical mount package assembly of claim 1, the method comprising:

providing the base substrate;

providing the package;

and

rotating the package relative to the base substrate, wherein the aligned grooves constrain the relative positions of the base substrate during rotation, and wherein the electrical leads maintain the connection between the base substrate and the package after rotation.

11. The vertical mount package assembly of claim 1, wherein the electrical leads maintain the relative position of the base and the package without a bracket.

12. The vertical mount package assembly of claim 1, wherein the electrical leads comprise exposed portions of a leadframe.

13. The vertical mount package assembly of claim 1, wherein the aligned grooves of the electrical leads are aligned along an axis parallel to a bend of the electrical leads.

14. The vertical mount package assembly of claim 1, wherein the recess is substantially rectangular or curved in cross-section.

15. The vertical mount package assembly of claim 1, wherein the base and the package intersect at an angle from 45 degrees to 135 degrees.

16. The vertical mount package assembly of claim 1, the vertical mount package assembly being configured to sense motion along two axes.

17. The vertical mount package assembly of claim 1, wherein the base substrate comprises a second package including an integrated device die.

18. The vertical mount package assembly of claim 17, the second package comprising a molding compound over the integrated device die.

19. The vertical mount package assembly of claim 17, the package comprising a molding compound over the at least one device.

20. The vertical mount package assembly of claim 17, the package comprising a cavity and a lid over the cavity, wherein the at least one device is disposed in the cavity.

21. The vertical mount package assembly of claim 17, wherein the at least one device is electrically connected to a first lead of the electrical leads by a first bonding wire, and wherein the integrated device die is electrically connected to the first lead by a second bonding wire.