Organic light-emitting display apparatus

• US 10,234,602 B2
• Filed: 11/29/2017
• Issued: 03/19/2019
• Est. Priority Date: 04/25/2013
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kim, Nam Jin, Park, Chul Hwan, Kim, Sang Woo, Kim, Mi Kyung
• Primary Examiner(s): Inoussa, Mouloucoulaye
• Application Number:
  US15/825,279
• Publication Number:
  US 20180081089A1
• Time in Patent Office: 475 Days
• Field of Search: 257 40, 35948702, 359507, 35948705, 35948706, 359 64, 359 96
• CPC Class Codes: G02B 1/14 Protective coatings, e.g. hard coatings
• CPC Class Codes: G02B 1/18 Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films G02B1/16 takes precedence
• CPC Class Codes: G02B 5/3033 in the form of a thin sheet or foil, e.g. Polaroid
• CPC Class Codes: H10K 50/841 Self-supporting sealing arrangements
• CPC Class Codes: H10K 59/87 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 59/871 Self-supporting sealing arrangements
• CPC Class Codes: H10K 59/8791 Arrangements for improving contrast, e.g. preventing reflection of ambient light
• CPC Class Codes: H10K 59/8793 Arrangements for polarized light emission H10K59/8791 takes precedence

Abstract

A functional polarizing film includes a polarizing layer, at least one moisture-binding layer on a first surface of the polarizing layer, and at least one moisture-blocking layer disposed on a first surface of the moisture-binding layer.

Claims

1. An organic light-emitting display apparatus, comprising:

a display substrate;

a plurality of organic light-emitting devices on the display substrate; and

a first functional polarizing film sealing the plurality of organic light-emitting devices, the first functional polarizing film including;

a first polarizing layer,

at least one first moisture-binding layer on a first surface of the first polarizing layer,

at least one first moisture-blocking layer disposed on a first surface of the first moisture-binding layer such that the at least one moisture-binding layer and the at least one moisture-blocking layer are on a same side of the polarizing layer,

a support layer on the polarizing layer, the support layer being configured to support the polarizing layer,

a first adhesive layer, wherein the at least one moisture-binding layer, the at least one moisture-blocking layer, and the polarizing layer are between the first adhesive layer and the support layer,

a second adhesive layer positioned between the polarizing layer and the at least one moisture-binding layer or between the polarizing layer and the at least one moisture-blocking-layer, and

a third adhesive layer positioned between the at least one moisture-binding layer and the at least one moisture-blocking layer.

2. The organic light-emitting display apparatus as claimed in claim 1, further comprising a sealing film between the plurality of organic light-emitting devices and the first functional polarizing film.

3. The organic light-emitting display apparatus as claimed in claim 2, wherein the sealing film includes at least one inorganic layer.

4. The organic light-emitting display apparatus as claimed in claim 1, further comprising a second functional polarizing film under the display substrate, the second functional polarizing film including a second polarizing layer, at least one second moisture-binding layer on a first surface of the second polarizing layer, and at least one second moisture-blocking layer disposed on a first surface of the second moisture-binding layer.

5. The organic light-emitting display apparatus as claimed in claim 1, wherein the first adhesive layer is on a surface facing the display substrate.

6. The organic light-emitting display apparatus as claimed in claim 1, wherein at least one of the first moisture-binding layer and the first moisture-blocking layer is formed in plural.

7. The organic light-emitting display apparatus as claimed in claim 1, wherein each of the at least one first moisture-binding layer and the at least one first moisture-blocking layer includes an organic material.

8. The organic light-emitting display apparatus as claimed in claim 1, wherein the at least one first moisture-binding layer includes at least one of polyvinyl alcohol (PVA), an ethylene vinyl alcohol copolymer (EVOH), or poly vinylidene chloride (PVDC).

9. The organic light-emitting display apparatus as claimed in claim 1, wherein the at least one first moisture-blocking layer includes a cyclo-olefin polymer (COP).

10. The organic light-emitting display apparatus as claimed in claim 1, wherein the at least one first moisture-binding layer is configured to block permeation of oxygen.

11. An organic light-emitting display apparatus, comprising:

a display substrate;

a plurality of organic light-emitting devices on the display substrate;

a sealing film sealing the plurality of organic light-emitting devices; and

a functional polarizing film on the sealing film,

wherein the functional polarizing film includes;

a first adhesive layer,

a moisture-binding layer,

a moisture-blocking layer,

a polarizing layer,

a second adhesive layer positioned between the polarizing layer and the moisture-binding layer or between the polarizing layer and the moisture-blocking-layer, and

a third adhesive layer positioned between the moisture-binding layer and the moisture-blocking layer,

a support layer on the polarizing layer, the support layer being configured to support the polarizing layer,

a fourth adhesive layer disposed between the polarizing layer and the support layer,

wherein the moisture-binding layer, the moisture-blocking layer, and the polarizing layer are between the first adhesive layer and the support layer,

wherein the moisture-binding layer and the moisture-blocking layer are on a same side of the polarizing layer,

wherein the first adhesive layer is between the sealing film and the moisture-binding layer.

12. The organic light-emitting display apparatus as claimed in claim 11, wherein the first adhesive layer, the moisture-binding layer, the moisture-blocking layer, and the polarizing layer are sequentially stacked.

13. The organic light-emitting display apparatus as claimed in claim 11, wherein the first adhesive layer, the moisture-blocking layer, the moisture-binding layer and the polarizing layer are sequentially stacked.

14. The organic light-emitting display apparatus as claimed in claim 11, wherein the support layer includes triacetate cellulose (TAC).

15. The organic light-emitting display apparatus as claimed in claim 11, wherein the moisture-binding layer includes at least one of PVA, an ethylene vinyl alcohol copolymer (EVOH), or poly vinylidene chloride (PVDC).

16. The organic light-emitting display apparatus as claimed in claim 11, wherein the moisture-blocking layer includes a cyclo-olefin polymer (COP).

17. The organic light-emitting display apparatus as claimed in claim 11, wherein the moisture-binding layer and the moisture-blocking layer includes an organic material.

18. The organic light-emitting display apparatus as claimed in claim 11, wherein the sealing film includes at least one inorganic layer.