DISPLAY UNIT AND ELECTRONIC APPARATUS

• US 20170237040A1
• Filed: 07/30/2015
• Published: 08/17/2017
• Est. Priority Date: 08/19/2014
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: KOBORI, ISAMU
• Granted Patent: US 10,290,831 B2
• Time in Patent Office: Days
• CPC Class Codes: H05B 33/24 of metallic reflective layers H05B33/26 takes precedence
• CPC Class Codes: H10K 50/824 combined with auxiliary electrodes
• CPC Class Codes: H10K 50/856 comprising reflective means
• CPC Class Codes: H10K 50/858 comprising refractive means, e.g. lenses
• CPC Class Codes: H10K 59/1201 Manufacture or treatment
• CPC Class Codes: H10K 59/122 Pixel-defining structures or layers, e.g. banks
• CPC Class Codes: H10K 59/80522 combined with auxiliary electrodes
• CPC Class Codes: H10K 59/878 comprising reflective means
• CPC Class Codes: H10K 59/879 comprising refractive means, e.g. lenses

Abstract

A display unit includes: a light-emitting section including a light-emitting element that has a first electrode, an organic layer including a light-emitting layer, and a second electrode in this order; and a reflector that is provided at a periphery of the light-emitting section to reflect light from the light-emitting section, and has a conductive layer, the conductive layer being electrically coupled to the second electrode of the light-emitting element.

Claims

1. A display unit, comprising:

a light-emitting section including a light-emitting element that has a first electrode, an organic layer including a light-emitting layer, and a second electrode in this order; and

a reflector that is provided at a periphery of the light-emitting section to reflect light from the light-emitting section, and has a conductive layer, the conductive layer being electrically coupled to the second electrode of the light-emitting element.

2. The display unit according to claim 1, further comprising:

a substrate having a display region and a peripheral region, the display region in which the light-emitting element and the reflector are provided, and the peripheral region being disposed outside the display region;

a common electrode that is provided in the peripheral region of the substrate,

wherein the conductive layer of the reflector extends to the peripheral region to be electrically coupled to the common electrode.

3. The display unit according to claim 1, wherein the reflector includes a dielectric layer that is stacked on the conductive layer.

4. The display unit according to claim 3, wherein

the light-emitting element comprises a plurality of light-emitting elements, and

the light-emitting layer and the second electrode of the light-emitting element are provided common to the plurality of light-emitting elements to cover the reflector.

5. The display unit according to claim 4, wherein the second electrode of the light-emitting element is electrically coupled to the conductive layer through a connection hole that is provided in the dielectric layer.

6. The display unit according to claim 5, wherein a bottom of the connection hole is larger in size than an inlet of the connection hole.

7. The display unit according to claim 6, wherein the dielectric layer includes a first dielectric layer and a second dielectric layer that have different etching speed in dry etching under a predetermined condition.

8. The display unit according to claim 7, wherein the reflector has a bulkhead-shaped support surrounding the light-emitting section, and the conductive layer, the first dielectric layer, and the second dielectric layer are stacked on the support in this order.

9. The display unit according to claim 8, wherein the connection hole is configured of a first connection hole and a second connection hole, the first connection hole being provided in the first dielectric layer, and the second connection hole being provided in the second dielectric layer and being smaller than the first connection hole.

10. The display unit according to claim 6, wherein, in the connection hole, the organic layer is attached to the conductive layer, and the second electrode is in contact with the conductive layer around the organic layer attached to the conductive layer.

11. The display unit according to claim 5, wherein

the light-emitting section comprises a plurality of light-emitting sections disposed in a matrix pattern, and

the connection hole of the dielectric layer is provided in each of clearances between the light-emitting sections that are adjacent to each other in a row direction or a column direction or both.

12. The display unit according to claim 5, wherein

the light-emitting section comprises a plurality of light-emitting sections disposed in a matrix pattern, and

the connection hole of the dielectric layer is provided at a position displaced from each of the light-emitting section in either of a row direction and a column direction.

13. The display unit according to claim 7, wherein the light-emitting section and the reflector are covered with a filler.

14. The display unit according to claim 13, wherein a refractive index of the filler is greater than a refractive index of the second dielectric layer, and the refractive index of the second dielectric layer is greater than a refractive index of the first dielectric layer.

15. The display unit according to claim 1, wherein the conductive layer includes silver or aluminum or both.

16. An electronic apparatus provided with a display unit, the display unit comprising:

a light-emitting section including a light-emitting element that has a first electrode, an organic layer including a light-emitting layer, and a second electrode in this order; and

a reflector that is provided at a periphery of the light-emitting section to reflect light from the light-emitting section, and has a conductive layer, the conductive layer being electrically coupled to the second electrode of the light-emitting element.