IP Library Granted Patent US 9,847,509
Granted Patent B2
US 9,847,509 · App. 15/003,803 · Granted Dec 19, 2017

Package of flexible environmental sensitive electronic device and sealing member

Inventors: Kun-Ming Chen (Taoyuan, TW); Chen-Chu Tsai (Taichung, TW); Yuh-Zheng Lee (Hsinchu, TW); Kuo-Lung Lo (New Taipei, TW)
Assignee: Industrial Technology Research Institute
H01L51/5256H01L51/5246H01L2251/5338H01L2251/558
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Quick Facts
Patent No.
US 9,847,509
App. No.
15/003,803
Granted
Dec 19, 2017
Kind
B2
Abstract

A flexible environmental sensitive electronic device package including a flexible electronic device, a thin film encapsulation (TFE) and a sealing member is provided. The TFE covers the flexible electronic device as well as the sealing member covers the TFE and the flexible electronic device. The sealing member includes a first portion and a second portion, wherein the first portion covers the flexible electronic device and the TFE, and the second portion covers the first portion. Young's modulus of the second portion is between the 0 MPa and 100 MPa. Young's modulus of the first portion is greater than that of the second portion. The thickness of the first portion is less than that of the second portion.

Claims (34)

1. A flexible environmental sensitive electronic device package, comprising:

a flexible electronic device;

a thin film encapsulation, covering the flexible electronic device; and

a sealing member, covering the flexible electronic device and the thin film encapsulation, wherein the sealing member includes a first portion and a second portion, the first portion covers the flexible electronic device and the thin film encapsulation, the second portion covers the first portion, Young's modulus of the second portion is between 0 MPa and 100 MPa, Young's modulus of the first portion is greater than that of the second portion, a thickness of the first portion is less than that of the second portion, and the first portion includes a plurality of separated patterns or a continuous pattern with a hollow region to partially cover the thin film encapsulation.

2. The flexible environmental sensitive electronic device package according to claim 1 , wherein the flexible electronic device includes:

a flexible substrate;

an environmental sensitive electronic device disposed on the flexible substrate; and

a first barrier layer disposed on the flexible substrate, wherein a portion of the first barrier layer is distributed between the environmental sensitive electronic device and the flexible substrate.

3. The flexible environmental sensitive electronic device package according to claim 2 , wherein the thin film encapsulation includes a plurality of inorganic films and the plurality of inorganic films cover the environmental sensitive electronic device.

4. The flexible environmental sensitive electronic device package according to claim 3 , wherein an outmost layer of the thin film encapsulation is a silicon nitride film and the thin film encapsulation contacts the first portion of the sealing member directly.

5. The flexible environmental sensitive electronic device package according to claim 1 , wherein the first portion of the sealing member includes a thermal curing adhesive and the second portion of the sealing member includes a pressure sensitive adhesive.

6. The flexible environmental sensitive electronic device package according to claim 1 , wherein the first portion of the sealing portion includes a thermal curing adhesive and the second portion of the sealing member includes a fluid.

7. The flexible environmental sensitive electronic device package according to claim 1 , wherein the sealing member further includes a side wall barrier structure disposed on the first portion.

8. The flexible environmental sensitive electronic device package according to claim 1 , wherein the thickness of the first portion is between 1 μm and 10 μm and the thickness of the second portion is between 5 μm and 25 μm.

9. The flexible environmental sensitive electronic device package according to claim 1 , wherein the first portion entirely covers the thin film encapsulation.

10. The flexible environmental sensitive electronic device package according to claim 1 , further including:

a barrier layer disposed between the flexible electronic device and the thin film encapsulation.

11. The flexible environmental sensitive electronic device package according to claim 1 , further including:

a flexible cover, covering the sealing member, wherein the sealing member is disposed between the flexible electronic device and the flexible cover; and

a second barrier layer, disposed between the flexible cover and the sealing.

12. The flexible environmental sensitive electronic device package according to claim 1 , wherein Young's modulus of the first portion is between 50 MPa and 3000 MPa.

13. A sealing member, adapted to cover a flexible electronic device, the sealing member comprising:

a first portion and a second portion, wherein the first portion covers the flexible electronic device, the second portion covers the first portion, Young's modulus of the second portion is between 0 MPa and 100 MPa, Young's modulus of the first portion is greater than that of the second portion, a thickness of the first portion is less than that of the second portion, and the first portion includes a plurality of separated patterns or a continuous pattern with a hollow region.

14. The sealing member according to claim 13 , wherein the first portion of the sealing portion includes a thermal curing adhesive and the second portion of the sealing member includes a pressure sensitive adhesive.

15. The sealing member according to claim 13 , wherein the first portion of the sealing portion includes a thermal curing adhesive and the second portion of the sealing member includes a fluid.

16. The sealing member according to claim 13 , wherein the thickness of the first portion is between 1 μm and 10 μm and the thickness of the second portion is between 5 μm and 25 μm.

17. The sealing member according to claim 13 , further including a side wall barrier structure surrounding the second portion.

18. The sealing member according to claim 13 , wherein Young's modulus of the first portion is between 50 MPa and 3000 MPa.

19. A flexible environmental sensitive electronic device package, comprising:

a flexible electronic device, comprising:

a flexible substrate; and

an environmental sensitive electronic device disposed on the flexible substrate;

a thin film encapsulation, covering the flexible electronic device, wherein the thin film encapsulation comprises a plurality of inorganic films and the plurality of inorganic films cover the environmental sensitive electronic device; and

a sealing member, covering the flexible electronic device and the thin film encapsulation, wherein the sealing member includes a first portion and a second portion, the first portion covers the flexible electronic device and the thin film encapsulation, the second portion covers the first portion, Young's modulus of the second portion is between 0 MPa and 100 MPa, Young's modulus of the first portion is greater than that of the second portion, and a thickness of the first portion is less than that of the second portion.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 15, 2022
From: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
To: HANNSTAR DISPLAY CORPORATION
Reel/Frame 059365/0305 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 25, 2016
From: CHEN, KUN-MING; TSAI, CHEN-CHU; LEE, YUH-ZHENG; LO, KUO-LUNG
To: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Reel/Frame 038503/0870 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 7, 2016
From: CHEN, KUN-MING; TSAI, CHEN-CHU; LEE, YUH-ZHENG; LO, KUO-LUNG
To: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Reel/Frame 038387/0610 →
Priority Claims (2)
TW 104115559 A · May 15, 2015 · national
CN 2015 1 0489470 · Aug 11, 2015 · national
Continuity (2)
Provisional Application 62106234 · Jan 22, 2015
Related Publication 20160218320A1 · Jul 28, 2016