Organic light-emitting display device

Abstract

The present invention provides an organic light-emitting diode with effectively extended lifespan at room temperature and high temperature, and an organic light-emitting display device containing the same. [Solution] A first pixel electrode, a second pixel electrode, and a third pixel electrode are arranged on a substrate; a first lower functional layer, a second lower functional layer, and a third lower functional layer are arranged on the first pixel electrode, the second pixel electrode, and the third pixel electrode, respectively; a first organic light-emitting layer for first color emission, a second organic light-emitting layer for second color emission, and a third organic light-emitting layer for third color emission are arranged on the first lower functional layer, the second lower functional layer, and the third lower functional layer, respectively; a first organic light-emitting layer, a second organic light-emitting layer, and a third organic light-emitting layer The organic light-emitting display device comprises: counter electrodes arranged across layers; and a first upper functional layer, a second upper functional layer, and a third upper functional layer, each having a thickness of 1,300 Å or more and 1,800 Å or less, interposed between the first organic light-emitting layer, the second organic light-emitting layer, and the third organic light-emitting layer and the counter electrodes.

Claims

1. A first pixel electrode, a second pixel electrode, and a third pixel electrode are arranged on the substrate, Displaced on the first pixel electrode, the second pixel electrode, and the third pixel electrode, A counter electrode facing each of the first pixel electrode, the second pixel electrode, and the third pixel electrode, A first organic that emits light of a first wavelength and is placed between the first pixel electrode and the counter electrode. The light-emitting layer, A second organic molecule that emits light of a second wavelength and is positioned between the second pixel electrode and the counter electrode. The light-emitting layer, A third organic molecule that emits light of a third wavelength and is positioned between the third pixel electrode and the counter electrode. The light-emitting layer, A first lower functional layer disposed between the first pixel electrode and the first organic light-emitting layer, A second lower functional layer is disposed between the second pixel electrode and the second organic light-emitting layer, A third lower functional layer is disposed between the third pixel electrode and the third organic light-emitting layer, A first upper functional layer disposed between the first organic light-emitting layer and the counter electrode, A second upper functional layer is disposed between the second organic light-emitting layer and the counter electrode, The third organic light-emitting layer and the third upper functional layer disposed between the counter electrode are included, The thickness of the first upper functional layer, the second upper functional layer, and the third upper functional layer is , between 1300 Å and 1800 Å, The ratio of the thickness of the first upper functional layer to the thickness of the first lower functional layer is the second upper functional Organic light-emitting display device, where the ratio of the thickness of the layer to the thickness of the second lower functional layer is different from that of the other Place.

2. The first organic light-emitting layer emits light of red wavelength, and the thickness of the first lower functional layer is 180 The organic light-emitting display apparatus according to claim 1, wherein the Å range is 0 Å or more and 2600 Å or less.

3. The thickness of the first upper functional layer and the thickness of the first lower functional layer are 1:1.2 or more and 1:1.4 The organic light-emitting display apparatus according to claim 2, having the following ratios.

4. The second organic light-emitting layer emits green wavelength light, and the thickness of the second lower functional layer is 130 The organic light-emitting display apparatus according to claim 1, wherein the Å range is 0 Å or more and 1800 Å or less.

5. The thickness of the second upper functional layer and the thickness of the second lower functional layer are 1:1 or more and 1:1.02 or less. The organic light-emitting display apparatus according to claim 4, having the following ratio.

6. The third organic light-emitting layer emits blue wavelength light, and the thickness of the third lower functional layer is 100 The organic light-emitting display apparatus according to claim 1, wherein the Å range is 0 Å or more and 1600 Å or less.

7. The ratio of the thickness of the third upper functional layer to the thickness of the third lower functional layer is 1:0.7 or more and 1:0.9 The organic light-emitting display apparatus according to claim 6, having the following ratios.

8. The optical distance defined as the distance from the upper surface of the first pixel electrode to the lower surface of the opposing electrode is the This is the distance at which light of one wavelength resonates in third order. The optical distance defined as the distance from the upper surface of the first pixel electrode to the lower surface of the first organic light-emitting layer is, The distance at which the light of the first wavelength resonates second, according to claim 1, Place.

9. The optical distance defined as the distance from the upper surface of the second pixel electrode to the lower surface of the opposing electrode is the This is the distance at which two wavelengths of light resonate in third order. The optical distance defined from the upper surface of the second pixel electrode to the lower surface of the second organic light-emitting layer is, The distance at which the light of the second wavelength resonates second-orderly, according to claim 8, Place.

10. The optical distance defined as the distance from the upper surface of the third pixel electrode to the lower surface of the opposing electrode is the This is the distance at which light of three wavelengths resonates in third order. The optical distance defined as the distance from the upper surface of the third pixel electrode to the lower surface of the third organic light-emitting layer is, The distance at which the light of the third wavelength resonates in the second order, according to claim 9, Place.

11. The first pixel electrode, the second pixel electrode, and the third pixel electrode are each reflective electrodes. The organic light-emitting display device according to claim 1, wherein the counter electrode is a light-transmitting electrode. Place.

12. The organic according to claim 1 further includes a capping layer disposed on the counter electrode. Light-emitting display device.

13. A first pixel electrode, a second pixel electrode, and a third pixel electrode are arranged on the substrate, Displaced on the first pixel electrode, the second pixel electrode, and the third pixel electrode, A counter electrode facing each of the first pixel electrode, the second pixel electrode, and the third pixel electrode, A first organic that emits light of a first wavelength and is placed between the first pixel electrode and the counter electrode. The light-emitting layer, A second organic molecule that emits light of a second wavelength and is positioned between the second pixel electrode and the counter electrode. The light-emitting layer, A third organic molecule that emits light of a third wavelength and is positioned between the third pixel electrode and the counter electrode. The light-emitting layer, A first lower functional layer disposed between the first pixel electrode and the first organic light-emitting layer, A second lower functional layer is disposed between the second pixel electrode and the second organic light-emitting layer, A third lower functional layer is disposed between the third pixel electrode and the third organic light-emitting layer, A first upper functional layer disposed between the first organic light-emitting layer and the counter electrode, A second upper functional layer is disposed between the second organic light-emitting layer and the counter electrode, The third organic light-emitting layer and the third upper functional layer disposed between the counter electrode are included, The second organic light-emitting layer emits green light, The thickness of the second upper functional layer is 1300 Å or more and 1800 Å or less. The thickness of the second lower functional layer is 1300 Å or more and 1800 Å or less, organic light-emitting display Playing device.

14. The optical distance defined as the distance from the upper surface of the second pixel electrode to the lower surface of the opposing electrode is the This is the distance at which two wavelengths of light resonate in third order. The optical distance defined as the distance from the upper surface of the second pixel electrode to the lower surface of the second organic light-emitting layer is, The organic light-emitting display according to claim 13, which is the distance at which the light of the second wavelength resonates second-orderly. Device.

15. The thickness of the second upper functional layer and the thickness of the second lower functional layer are 1:1 or more and 1:1.02 or less. The organic light-emitting display apparatus according to claim 13, having the following ratio.

16. The first organic light-emitting layer emits red light, The thickness of the first upper functional layer is 1300 Å or more and 1800 Å or less, as described in claim 13. An organic light-emitting display device.

17. The thickness of the first lower functional layer is 1800 Å or more and 2600 Å or less, as described in claim 16. An organic light-emitting display device.

18. The thickness of the first upper functional layer and the thickness of the first lower functional layer are 1:1.2 or more and 1:1.4 The organic light-emitting display apparatus according to claim 16, having the following ratios.

19. The third organic light-emitting layer emits blue light, The thickness of the third upper functional layer is 1300 Å or more and 1800 Å or less, as described in claim 13. An organic light-emitting display device.

20. The thickness of the third lower functional layer is 1000 Å or more and 1600 Å or less, as described in claim 19. An organic light-emitting display device.

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