Display apparatus including polarization film

Inventors: Dukjin Lee (Yongin-si, KR); Beonghun Beon (Yongin-si, KR)

Assignee: SAMSUNG DISPLAY CO., LTD.

H10K59/8793 G02B5/3083 H10K59/873

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Quick Facts

Patent No.: US 12677579
App. No.: 18/318,287
Granted: Jul 7, 2026
Kind: B2

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Abstract

A display apparatus includes a display panel that includes a display element and a thin-film encapsulation layer disposed on the display element, and a polarization film disposed on the display panel and that includes a phase compensation layer, a phase retardation layer, and a polarization layer. A thickness direction phase difference of the display panel is less than or equal to about −35 nm.

Claims (33)

1 . A display apparatus, comprising:

a display panel that includes a display element and a thin-film encapsulation layer disposed on the display element; and

a polarization film disposed on the display panel and that includes a phase compensation layer, a phase retardation layer, and a polarization layer,

wherein a thickness direction phase difference of the display panel is less than or equal to about −35 nm or less.

2 . The display apparatus of claim 1 , wherein the phase compensation layer comprises a first phase compensation layer and a second phase compensation layer.

3 . The display apparatus of claim 2 , wherein the phase retardation layer is located between the first phase compensation layer and the second phase compensation layer.

4 . The display apparatus of claim 2 , wherein the second phase compensation layer is located between the phase retardation layer and the polarization layer.

5 . The display apparatus of claim 2 , wherein the first phase compensation layer comprises a positive C plate.

6 . The display apparatus of claim 2 , wherein a thickness direction phase difference of the first phase compensation layer is less than or equal to about −40 nm.

7 . The display apparatus of claim 2 , wherein the second phase compensation layer comprises a tri-acetyl cellulose (TAC) film.

8 . The display apparatus of claim 2 , wherein a thickness direction phase difference of the second phase compensation layer is greater than or equal to about +4 nm.

9 . The display apparatus of claim 2 , wherein the second phase compensation layer comprises a negative C plate.

10 . The display apparatus of claim 2 , wherein the second phase compensation layer is located on the first phase compensation layer, and the phase retardation layer is located on the second phase compensation layer.

11 . The display apparatus of claim 1 , wherein the phase retardation layer comprises a quarter-wave plate (QWP).

12 . The display apparatus of claim 1 , wherein the polarization film further comprises a protective substrate disposed on the polarization layer.

13 . The display apparatus of claim 1 , wherein the display element comprises a pixel electrode, a counter electrode, and an emission layer located between the pixel electrode and the counter electrode.

14 . The display apparatus of claim 1 , wherein the thin-film encapsulation layer comprises at least one inorganic encapsulation layer and at least one organic encapsulation layer.

15 . The display apparatus of claim 14 , wherein the at least one inorganic encapsulation layer comprises a first inorganic encapsulation layer that includes at least one inorganic material and a second inorganic encapsulation layer that includes at least one inorganic material.

16 . A polarization film, comprising:

a first phase compensation layer that includes a positive C plate;

a phase retardation layer disposed on the first phase compensation layer;

a second phase compensation layer disposed on a side of the phase retardation layer and that has a thickness direction phase difference of greater than or equal to about +4 nm; and

a polarization layer disposed on the second phase compensation layer.

17 . The polarization film of claim 16 , wherein a thickness direction phase difference of the first phase compensation layer is less than or equal to about −40 nm.

18 . The polarization film of claim 16 , wherein the second phase compensation layer comprises a tri-acetyl cellulose (TAC) film or a negative C plate.

19 . The polarization film of claim 16 , wherein the phase retardation layer comprises a quarter-wave plate (QWP).

20 . The polarization film of claim 16 , further comprising a protective substrate disposed on the polarization layer.

21 . A display apparatus, comprising:

a display panel that includes a display element and a thin-film encapsulation layer disposed on the display element; and

a polarization film disposed on the display panel and that includes a first phase compensation layer, a second phase compensation layer, a phase retardation layer, and a polarization layer,

wherein a thickness direction phase difference of the first phase compensation layer is less than or equal to about −40 nm, and

wherein a thickness direction phase difference of the second phase compensation layer is greater than or equal to about +4 nm.

22 . The display apparatus of claim 21 , wherein a thickness direction phase difference of the display panel is less than or equal to about −35 nm.