PACKAGED-INTEGRATED LITHIUM ION THIN FILM BATTERY AND METHODS FOR FABRICATING THE SAME

• US 20200136099A1
• Filed: 06/29/2017
• Published: 04/30/2020
• Est. Priority Date: 06/29/2017
• Status: Active Application

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: SOUNART, Thomas L., OSTER, Sasha N., Strong, Veronica A., SWAN, Johanna M.
• Application Number:
  US16/606,698
• Publication Number:
  US 20200136099A1
• Time in Patent Office: Days
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 10/0562 Solid materials
• CPC Class Codes: H01M 10/0585 of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
• CPC Class Codes: H01M 2004/028 Positive electrodes
• CPC Class Codes: H01M 2220/30 Batteries in portable systems, e.g. mobile phone, laptop
• CPC Class Codes: H01M 4/1391 of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
• CPC Class Codes: H01M 4/505 of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
• CPC Class Codes: H01M 4/525 of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
• CPC Class Codes: H01M 50/11 having a chip structure, e.g. micro-sized batteries integrated on chips
• CPC Class Codes: H01M 50/119 Metals
• CPC Class Codes: H01M 50/121 Organic material
• CPC Class Codes: H01M 50/124 having a layered structure
• CPC Class Codes: H01M 50/136 Flexibility or foldability
• CPC Class Codes: H01M 50/514 Methods for interconnecting adjacent batteries or cells
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

Package-integrated thin film lithium ion battery and methods for fabricating the same are disclosed. In one example, an electronic package includes an organic package substrate, and a lithium (Li) ion thin film battery (TFB) integrated into the organic package substrate. The Li ion TFB is formed in or on the organic package substrate or the Li ion TFB can be embedded in the organic package substrate. The Li ion TFB includes an anode layer, electrolyte layer, cathode layer, and anode and cathode current collector layers. The cathode layer can be a crystalline transition metal oxide cathode layer including lithium cobalt oxide LiCoO2 (LCO) or lithium manganese oxide LiMn2O3 The cathode layer is laser annealed to crystallize the cathode layer. The organic package substrate is a low temperature substrate such that the organic package substrate is maintained at a temperature of 215 C or less when the cathode layer is laser annealed. The organic package substrate can also be a flexible organic package substrate.

Claims

1. An electronic package comprising:

an organic package substrate; and

a lithium (Li) ion thin film battery (TFB) integrated into the organic package substrate.

2. The electronic package of claim 1, wherein the Li ion TFB is formed in or on the organic package substrate.

3. The electronic package of claim 1, wherein the Li on TFB is embedded in the organic package substrate.

4. The electronic package of claim 1, wherein the Li ion TFB includes an anode layer, electrolyte layer, cathode layer, and anode and cathode current collector layers.

5. The electronic package of claim 4, wherein the cathode layer is a crystalline transition metal oxide cathode layer including lithium cobalt oxide LiCoO2 (LCO) or lithium manganese oxide LiMn₂O₃

6. The electronic package of claim 5, wherein the cathode layer is laser annealed to crystallize the cathode layer.

7. The electronic package of claim 6, wherein the organic package substrate is a low temperature substrate such that the organic package substrate is maintained at a temperature of 215°

C. or less when the cathode layer is laser annealed.

8. The electronic package of claim 1, wherein the organic package substrate is a flexible organic package substrate.

9. A method for fabricating an electronic package comprising:

providing an organic package substrate; and

integrating layers of a lithium (Li) ion thin film battery (TFB) into the organic package substrate.

10. The method of claim 9, wherein integrating the layers of Li ion TFB into the organic package substrate includes:

forming cathode and anode current collector layers in the organic package substrate;

forming a cathode layer on the cathode current collector layer;

forming an electrolyte layer on the cathode layer; and

forming an anode layer on the electrolyte layer, the anode layer is connected to the anode current collector layer.

11. The method of claim 9, wherein integrating the layers of Li ion TFB into the organic package substrate includes:

forming cathode and anode current collector layers in the organic package substrate;

forming anode layer on the anode current collector layer;

forming an electrolyte layer on the anode layer;

forming a cathode layer on the electrolyte layer, the cathode layer is connected to the cathode current collector layer.

12. The method of claim 9, wherein integrating the layers of Li ion TFB into the organic package substrate includes:

forming a cathode current collector layer on the organic package substrate;

forming a cathode layer on the cathode current collector layer;

forming an electrolyte layer on the cathode layer;

forming an anode layer on the electrolyte layer; and

forming an anode current collector layer on the anode layer.

13. The method of claim 9, wherein integrating the layers of Li ion TFB into the organic package substrate includes:

forming an anode current collector layer on the organic package substrate;

forming an anode layer on the anode current collector layer;

forming an electrolyte layer on the anode layer;

forming a cathode layer on the electrolyte layer; and

forming a cathode current collector layer on the cathode layer.

14. The method of claim 9, wherein integrating the layers of the Li ion TFB into the organic package substrate includes:

embedding a cathode current collector layer, an anode current collector layer, a cathode layer, an anode layer, and electrolyte layer in the organic package substrate.

15. The method of claim 10, wherein integrating the layers of Li ion TFB into the organic package substrate includes.

forming metal traces in the organic package substrate;

and

coupling the metal traces to the cathode and anode current collector layers.

16. The method of claim 10, wherein integrating the layers of the Li ion TFB into the organic package substrate includes:

depositing a crystalline transition metal oxide cathode layer including lithium cobalt oxide LiCoO₂ (LCO) or lithium manganese oxide LiMn₂O₃ to form the cathode layer; and

laser annealing the cathode layer to crystallize the cathode layer.

17. The method of claim 16, wherein laser annealing the cathode layer includes providing laser pulses to the cathode layer.

18. The method of claim 16, wherein the organic package substrate is maintained at a temperature of 215°

C. or less when the cathode layer is laser annealed.

19. The method of claim 18, wherein the organic package substrate is a flexible organic package substrate.

20. A method for fabricating an electronic package comprising:

providing an organic package substrate; and

depositing layers of a lithium (Li) ion thin film battery (TFB) on a flexible organic package substrate.

21. The method of claim 20, wherein depositing the layers of the Li ion TFB on the flexible organic package substrate includes:

depositing a cathode current collector layer on the flexible organic substrate;

depositing a cathode layer on the current collector layer;

depositing an electrolyte layer on the cathode layer;

depositing an anode layer on the electrolyte layer; and

depositing an anode current collector layer on the anode layer.

22. The method of claim 20, wherein depositing the layers of the Li ion TFB on the flexible organic package substrate includes:

depositing an anode current collector layer on the flexible organic substrate;

depositing an anode layer on the current collector layer;

depositing an electrolyte layer on the anode layer;

depositing a cathode layer on the electrolyte layer; and

depositing a cathode current collector layer on the cathode layer.

23. The method of claim 21, wherein depositing the cathode layer includes laser annealing the cathode layer to crystallize the cathode layer.

24. The method of claim 23, further comprising:

forming metal traces in the flexible organic package substrate; and

coupling the metal traces to the cathode and anode current collector layers.

25. An electronic system comprising:

a system bus; and

a plurality of electronic packages coupled to the system bus, each electronic package includes an organic package substrate, and a lithium (Li) ion thin film battery (TFB) integrated into the organic package substrate.