Organic light emitting diode display device

Patent metadata

Field	Value
Publication number	US-11081531-B2
Application number	US-201916714217-A
Country	US
Kind code	B2
Filing date	Dec 13, 2019
Priority date	Mar 4, 2019
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

An organic light emitting diode display device includes a lower substrate, a plurality of lower electrodes, a light emitting layer, an upper electrode, and a first functional module. The lower substrate includes a first module region that includes sub-pixel regions and transmissive regions, and a display region that surrounds the first module region and includes the sub-pixel regions. The lower electrodes are respectively disposed on the lower substrate in the sub-pixel regions in the first module region. The light emitting layer is disposed on the lower electrodes, and includes a first opening between two adjacent lower electrodes. The upper electrode is disposed on the light emitting layer, and includes a second opening that overlaps the first opening. The first functional module is disposed on a bottom surface of the lower substrate in the first module region.

First claim

What is claimed is:

1. An organic light emitting diode display device, comprising:
a lower substrate that includes a first module region and a display region that surrounds the first module region, wherein the first module region includes sub-pixel regions and transmissive regions and the display region includes the sub-pixel regions;
a planarization layer disposed on the lower substrate;
a plurality of lower electrodes respectively disposed on a top surface of the planarization layer in the sub-pixel regions in the first module region;
a pixel defining layer disposed on the planarization layer and that covers both sides of each of the lower electrodes in the first module region, wherein the pixel defining layer includes an opening that exposes a top surface of the planarization layer in each of the transmissive regions in the first module region;
a light emitting layer disposed on the lower electrodes, wherein the light emitting layer includes a first opening formed between two adjacent lower electrodes;
an upper electrode disposed on the light emitting layer, wherein the upper electrode includes a second opening that overlaps the first opening;
a lower spacer disposed in the opening of the pixel defining layer and on the planarization layer in each of the transmissive regions in the first module region; and
a first functional module disposed on a bottom surface of the lower substrate in the first module region.

2. The organic light emitting diode display device of claim 1 , wherein the first and second openings are located in the transmissive regions in the first module region.

3. The organic light emitting diode display device of claim 1 , wherein the first and second openings expose the top surface of the planarization layer in each of the transmissive regions in the first module region.

4. The organic light emitting diode display device of claim 1 , wherein
the first and second openings expose a top surface of the lower spacer,
the top surface of the lower spacer is located at a same level as a top surface of the pixel defining layer, and
the light emitting layer and the upper electrode are disposed on at least a part of a side surface of the lower spacer.

5. The organic light emitting diode display device of claim 1 , further comprising
an upper spacer disposed on the lower spacer, wherein
the first and second openings expose a top surface of the upper spacer,
the top surface of the upper spacer is located at a higher level than a top surface of the pixel defining layer, and
the light emitting layer and the upper electrode are disposed on at least a part of a side surface of each of the lower and upper spacers.

6. The organic light emitting diode display device of claim 1 , wherein
the lower substrate further includes a second module region spaced apart from the first module region and that includes the transmissive region, and
the display region surrounds the second module region.

7. The organic light emitting diode display device of claim 6 , further comprising
a second functional module disposed on the bottom surface of the lower substrate in the second module region,
wherein the transmissive region of the second module region corresponds to the second functional module.

8. The organic light emitting diode display device of claim 7 , wherein
the first functional module is one of a face recognition sensor module, a pupil recognition sensor module, an acceleration sensor module, a proximity sensor module, an infrared sensor module, or an illuminance sensor module, and
the second functional module is a camera module.

9. The organic light emitting diode display device of claim 7 , wherein
the light emitting layer includes a third opening formed in the second module region, and
the upper electrode includes a fourth opening in the second module region that overlaps the third opening,
wherein organic light emitting diode display device further includes:
a planarization layer disposed on the lower substrate; and
a pixel defining layer disposed on the planarization layer in the display region adjacent to the second module region.

10. The organic light emitting diode display device of claim 9 , wherein the third and fourth openings expose a top surface of the planarization layer in the second module region.

11. The organic light emitting diode display device of claim 9 , further comprising
a lower structure disposed on the planarization layer in the second module region.

12. The organic light emitting diode display device of claim 11 , wherein
the third and fourth openings expose a top surface of the lower structure,
the top surface of the lower structure is located at a same level as a top surface of the pixel defining layer, and
the light emitting layer and the upper electrode are disposed on at least a part of a side surface of the lower structure.

13. The organic light emitting diode display device of claim 11 , further comprising
an upper structure disposed on the lower structure, wherein
the first and second openings expose a top surface of the upper structure,
the top surface of the upper structure is located at a higher level than a top surface of the pixel defining layer, and
the light emitting layer and the upper electrode are disposed on at least a part of a side surface of each of the lower and upper structures.

14. The organic light emitting diode display device of claim 6 , wherein
an image is displayed in the first module region and the display region, and
no image is displayed in the second module region.

15. The organic light emitting diode display device of claim 6 , further comprising
a plurality of semiconductor elements disposed between the lower substrate and the light emitting layer,
wherein no semiconductor elements are disposed in the transmissive regions and the second module region.

16. The organic light emitting diode display device of claim 1 , further comprising:
a gate insulating layer disposed on the lower substrate;
an insulating interlayer disposed on the gate insulating layer;
a planarization layer disposed on the insulating interlayer; and
an upper substrate disposed on the planarization layer and that faces the lower substrate,
wherein external light is incident onto the first functional module by propagating through the upper substrate, the first and second openings, the planarization layer, the insulating interlayer, the gate insulating layer, and the lower substrate in the first module region.

17. An organic light emitting diode display device, comprising:
a lower substrate that includes a first module region, a second module region and a display region that surrounds the first module region and the second module region, wherein the first module region includes sub-pixel regions and transmissive regions, the second module region includes the transmissive regions, and the display region includes the sub-pixel regions;
a planarization layer disposed on the lower substrate;
a plurality of lower electrodes respectively disposed on a top surface of the lower substrate in the sub-pixel regions in the first module region;
a pixel defining layer disposed on the planarization layer in the display region adjacent to the second module region, wherein the pixel defining layer includes an opening that exposes a top surface of the planarization layer in the transmissive regions in the second module region;
a light emitting layer disposed on the lower electrodes, wherein the light emitting layer includes a first opening formed between two adjacent lower electrodes; and
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Assignees

• Samsung Display Co Ltd

Inventors

• Cho Wonje

Classifications

• H10K59/80521

  characterised by their shape · CPC title

• H10K59/65

  OLEDs integrated with inorganic image sensors · CPC title

• H10K59/353

  characterised by the geometrical arrangement of the RGB subpixels · CPC title

• H10K59/121 Primary

  characterised by the geometry or disposition of pixel elements · CPC title

• H01L27/3218 Primary

  Electricity · mapped topic