Organic electroluminescent panel and luminescent unit

Patent metadata

Field	Value
Publication number	US-10141384-B2
Application number	US-201815889631-A
Country	US
Kind code	B2
Filing date	Feb 6, 2018
Priority date	Feb 13, 2017
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

An organic electroluminescent panel includes a plurality of pixels and a plurality of banks. The pixels each include a plurality of subpixels. The subpixels each include an organic electroluminescent element that includes a first electrode, a second electrode, and an organic material layer that is provided between the first electrode and the second electrode. The banks define each of the subpixels in each of the pixels. The organic electroluminescent element in each of the subpixels is provided in a gap between adjacent two of the banks, and the following relational expression is satisfied:

y ≤0.0001714 x 2 +0.0151429 x +0.2914286
where y denotes a height, from a bottom surface of the gap, of a pinning position at which a surface of the organic material layer and one of the banks are in contact with each other, and x denotes a width of the bottom surface of the gap.

First claim

What is claimed is:

1. An organic electroluminescent panel comprising:
a plurality of pixels each including a plurality of subpixels, the subpixels each including an organic electroluminescent element, the organic electroluminescent element including a first electrode, a second electrode, and an organic material layer that is provided between the first electrode and the second electrode; and
a plurality of banks that define each of the subpixels in each of the pixels,
the organic electroluminescent element in each of the subpixels being provided in a gap between adjacent two of the plurality of banks, and
the following relational expression being satisfied:
y≤ 0.0001714 x 2 +0.0151429 x+ 0.2914286

where y denotes a height, from a bottom surface of the gap, of a pinning position at which a surface of the organic material layer and one of the banks are in contact with each other, and x denotes a width of the bottom surface of the gap.

2. The organic electroluminescent panel according to claim 1 , wherein the following relational expression is satisfied:
y≤ 0.0000762 x 2 +0.0100952 x+ 0.2914286
where y denotes the height and x denotes the width.

3. The organic electroluminescent panel according to claim 1 , wherein the following relational expression is satisfied:
y≤ 0.0000190 x 2 +0.0050476 x+ 0.2914286
where y denotes the height and x denotes the width.

4. The organic electroluminescent panel according to claim 1 , wherein the width x is 100 μm or less.

5. The organic electroluminescent panel according to claim 1 , wherein the width x is 50 μm or less.

6. The organic electroluminescent panel according to claim 4 , wherein the width x is 10 μm or greater.

7. The organic electroluminescent panel according to claim 1 , wherein the first electrode is exposed from the bottom surface.

8. A luminescent unit comprising:
an organic electroluminescent panel; and
a driver,
the organic electroluminescent panel including
a plurality of pixels driven by the driver and each including a plurality of subpixels, the subpixels each including an organic electroluminescent element, the organic electroluminescent element including a first electrode, a second electrode, and an organic material layer that is provided between the first electrode and the second electrode, and
a plurality of banks that define each of the subpixels in each of the pixels,
the organic electroluminescent element in each of the subpixels being provided in a gap between adjacent two of the plurality of banks, and
the following relational expression being satisfied:
y≤ 0.0001714 x 2 +0.0151429 x+ 0.2914286

where y denotes a height, from a bottom surface of the gap, of a pinning position at which a surface of the organic material layer and one of the banks are in contact with each other, and x denotes a width of the bottom surface of the gap.

Assignees

• Joled Inc

Inventors

• Takata Masakazu

Classifications

• G09G2310/08

  Details of timing specific for flat panels, other than clock recovery · CPC title

• G09G3/3225

  using an active matrix · CPC title

• H01L51/5012

  Electricity · mapped topic

• G09G3/3266

  Details of drivers for scan electrodes · CPC title

• H01L2227/323

  Electricity · mapped topic