Display panel apparatus and manufacturing method of display panel apparatus

Patent metadata

Field	Value
Publication number	US-9112183-B2
Application number	US-201213466470-A
Country	US
Kind code	B2
Filing date	May 8, 2012
Priority date	Mar 31, 2010
Publication date	Aug 18, 2015
Grant date	Aug 18, 2015

Abstract

A display panel apparatus includes pixels, each including an organic luminescent layer between first and second electrodes. A glass substrate is above the second electrode. A lens sheet is between the pixels and the glass substrate and includes a lens corresponding to each of the pixels and a base from which the lens protrudes. A first partition is between the glass substrate and the lens sheet on a first side of the base from which the lens protrudes for partitioning, between the glass substrate and the lens sheet, a gap between the lens of each of the pixels. A second partition is between the organic electro-luminescence unit and the lens sheet on a second side of the base opposite the first side from which the lens protrudes for partitioning, between the organic electro-luminescence unit and the lens sheet, the gap between the lens of each of the pixels.

First claim

What is claimed is:

1. A display panel apparatus, comprising:
an organic electro-luminescence unit including an array of pixels, the pixels each including a first electrode, a second electrode, and an organic luminescent layer between the first electrode and the second electrode, the organic luminescent layer of each of the pixels configured to emit light, the organic luminescent layer of at least one blue pixel of the pixels configured to emit blue light;
a glass substrate above the organic electro-luminescence unit;
a lens sheet between the organic electro-luminescence unit and the glass substrate and including a lens corresponding to each of the pixels and a base from which the lens protrudes;
a first partition between the glass substrate and the lens sheet on a first side of the base from which the lens protrudes for partitioning, between the glass substrate and the lens sheet, a gap between the lens of each of the pixels, the first partition having a first height greater than a second height of the lens of each of the pixels; and
a second partition between the organic electro-luminescence unit and the lens sheet on a second side of the base opposite the first side from which the lens protrudes and corresponding to the first partition for partitioning, between the organic electro-luminescence unit and the lens sheet, the gap between the lens of each of the pixels,
wherein
a space partitioned by the second partition and corresponding to the blue pixel that includes the organic luminescent layer that is configured to emit the blue light includes a resin that is configured to selectively transmit the blue light.

2. The display panel apparatus according to claim 1 , wherein
the pixels include:
a first pixel corresponding to a first color; and
a second pixel adjacent the first pixel and corresponding to a second color different than the first color, and

the first partition and the second partition are configured to block reflected light traveling to the second pixel due to reflection from the glass substrate, the reflected light configured to be emit from the organic luminescent layer included in the first pixel and partitioned by the first partition and the second partition.

3. The display panel apparatus according to claim 2 , wherein
the lens sheet includes a trench in the base, the trench being recessed from a surface of the base in a direction opposite a protruding direction of the lens,
the base is between the first partition and the second partition,
the first partition is in the trench,
the second partition corresponds to the first partition that is in the trench, and
the trench is included for aligning the first partition and the second partition.

4. The display panel apparatus according to claim 3 , wherein
a portion of the first partition that is in the trench is configured to block the reflected light traveling to the second pixel due to the reflection from the glass substrate.

5. The display panel apparatus according to claim 3 , wherein
a ratio of a distance, from an end of the portion of the first partition that is in the trench to the surface of the base, to a thickness of the base is greater than 0 and at most ⅔.

6. The display panel apparatus according to claim 2 , wherein
sides of the first partition and the second partition are black, and
the first partition and the second partition are configured to block the reflected light traveling from the first pixel to the second pixel by absorbing the reflected light.

7. The display panel apparatus according to claim 6 , wherein
the first partition and the second partition are configured to block second light traveling directly from the first pixel to the second pixel by absorbing the second light, the second light configured to be emitted from the organic luminescent layer included in the first pixel.

8. The display panel apparatus according to claim 6 , wherein
the first partition and the second partition are configured to absorb third light entering the first pixel from outside of the display panel apparatus via the glass substrate.

9. The display panel apparatus according to claim 1 , wherein
a first ratio of a first width of a first bottom surface of the first partition to a thickness of the base is at least 3 and at most 50, and
a second ratio of a second width of a second bottom surface of the second partition to the thickness of the base is at least 3 and at most 50.

10. The display panel apparatus according to claim 1 , wherein
the first partition penetrates the lens sheet and is connected to the second partition.

11. The display panel apparatus according to claim 1 , wherein
the organic luminescent layer of a red pixel of the pixels is configured to emit the red light,
the organic luminescent layer of a green pixel of the pixels is configured to emit the green light, and
second spaces partitioned by the second partition and corresponding to the red pixel and the blue pixel include a second resin that has a transmission factor of light of at least 95% and less than 100%.

12. The display panel apparatus according to claim 1 , wherein
the organic luminescent layer of a green pixel of the pixels is configured to emit green light, and
a second space partitioned by the second partition and corresponding to the green pixel includes a second resin that is configured to selectively transmit the green light.

13. The display panel apparatus according to claim 12 , wherein
the organic luminescent layer of a red pixel of the pixels is configured to emit red light, and
a third space partitioned by the second partition and corresponding to the red pixel includes a third resin that is configured to selectively transmit the red light.

14. The display panel apparatus according to claim 1 , wherein
the first partition extends approximately to the glass substrate.

15. The display panel apparatus according to claim 1 , wherein
the first partition contacts the glass substrate.

16. The display panel apparatus according to claim 1 , wherein
multiple pixels of the pixels are formed along a predetermined direction and are each configured to emit the light in a same color, and
the first partition partitions the gap between the lens of each of the pixels that is formed along the predetermined direction and is configured to emit the light in a color different than the same color.

17. The display panel apparatus according to claim 16 , wherein
the lens is elongated in a top view and has an elliptic arc shape with a predetermined curvature factor in a cross-sectional view that is orthogonal to a longitudinal direction of the lens.

18. The display panel apparatus according to claim 16 , wherein
a hole injection layer that injects holes into the organic luminescent layer is between the organic luminescent layer and the first electrode.

19. A display apparatus, comprising:
the display panel apparatus according to claim 16 .

20. The display panel apparatus according to claim 1 , further comprising:
a sealing layer above the second electrode for sealing the pixels.

21. The display panel apparatus according to claim 1 , further comprising:
a bonding layer over the lens that is configured to planarize irregularities and bonds the lens sheet and the glass substrate.

22. The display panel apparatus according to claim 21 , wherein
the glass substrate comprises an outer surface of the display panel apparatus.

Assignees

• Ohta Takashi
• Joled Inc

Inventors

• Ohta Takashi

Classifications

• H10K59/8791

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title

• H10K50/86

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title

• H10K59/879 Primary

  comprising refractive means, e.g. lenses · CPC title

• H01L51/5275

  Electricity · mapped topic

• H01L51/5281 Primary

  Electricity · mapped topic