Multi-layered film and solar cell package structure

Inventors: Li-Han Chung (Miaoli City, TW); Mei-Chun Lai (Zhubei City, TW); Sheng-Yang Liu (Kaohsiung City, TW); Hung-Chin Shen (Zhudong Township, TW); Po-Ling Shiao (Zhubei City, TW); Pei-Yin Chen (Taipei City, TW)

Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

H10K30/88 H10F19/804 B32B27/306 B32B27/32 B32B2307/7244 B32B2307/7246 B32B2457/12

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Quick Facts

Patent No.: US 12672422
App. No.: 19/002,250
Granted: Jun 30, 2026
Kind: B2

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Abstract

A multi-layered film includes (A) an oxygen barrier layer; (B) a moisture barrier layer disposed on and in direct contact with (A) the oxygen barrier layer; and (C) an adhesive layer disposed on and in direct contact with (B) the moisture barrier layer. (A) The oxygen barrier layer includes (a) modified polyethylene resin and (e) ethylene-vinyl alcohol copolymer. (B) The moisture barrier layer includes (bi) first poly(ethylene-co-1-octene) having a melting index of 20 g/10 min to 40 g/10 min at 190° C. and (b2) second poly(ethylene-co-1-octene) having a melting index of 1 g/10 min to 10 g/10 min at 190° C. (C) The adhesive layer includes poly(ethylene-co-methacrylate-co-glycidyl methacrylate) having a melting index of 1 g/10 min to 10 g/10 min at 190° C.

Claims (20)

1 . A multi-layered film, comprising:

(A) an oxygen barrier layer;

(B) a moisture barrier layer disposed on and in direct contact with (A) the oxygen barrier layer; and

wherein (A) the oxygen barrier layer includes (a) modified polyethylene resin and (e) ethylene-vinyl alcohol copolymer;

wherein (B) the moisture barrier layer includes (b1) first poly(ethylene-co-1-octene) having a melting index of 20 g/10 min to 40 g/10 min at 190° C. and (b2) second poly(ethylene-co-1-octene) having a melting index of 1 g/10 min to 10 g/10 min at 190° C., and

wherein (C) the adhesive layer includes poly(ethylene-co-methacrylate- co-glycidyl methacrylate) having a melting index of 1 g/10 min to 10 g/10 min at 190° C.

2 . The multi-layered film as claimed in claim 1 , wherein (a) the modified polyethylene resin and (e) the ethylene-vinyl alcohol copolymer have a weight ratio of 70:30 to 95:5.

3 . The multi-layered film as claimed in claim 1 , wherein (a) the modified polyethylene resin comprises (a1) ethylene-glycidyl methacrylate copolymer, (a2) ethylene-acrylic acid copolymer, (a3) ethylene-methyl acrylate-maleic anhydride copolymer, or a combination thereof.

4 . The multi-layered film as claimed in claim 1 , wherein (A) the oxygen barrier layer has a thickness of 50 micrometers to 300 micrometers.

5 . The multi-layered film as claimed in claim 1 , wherein (b1) the first poly(ethylene-co-1-octene) and (b2) the second poly(ethylene-co-1-octene) have a weight ratio of 85:15 to 65:35.

6 . The multi-layered film as claimed in claim 1 , wherein (B) the moisture barrier layer has a thickness of 100 micrometers to 300 micrometers.

7 . The multi-layered film as claimed in claim 1 , wherein (C) the adhesive layer has a thickness of 100 micrometers to 300 micrometers.

8 . A solar cell package structure, comprising:

a solar cell;

the multi-layered film as claimed in claim 1 packaging the solar cell; and

a cap disposed on the multi-layered film,

wherein (A) the oxygen barrier layer of the multi-layered film is in direct contact with the solar cell, and (C) the adhesive layer of the multi-layered film is in direct contact with the cap.

9 . The solar cell package structure as claimed in claim 8 , wherein the cap comprises a glass cap.

10 . The solar cell package structure as claimed in claim 8 , wherein the solar cell comprises a perovskite solar cell or an n-type silicon solar cell.