Pixel arrangement structure with misaligned repeating units, display substrate, display apparatus and method of fabrication thereof

Patent metadata

Field	Value
Publication number	US-11264430-B2
Application number	US-201916600316-A
Country	US
Kind code	B2
Filing date	Oct 11, 2019
Priority date	Feb 18, 2016
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

A pixel arrangement structure are provided, which includes a plurality of repeating units. Each of the plurality of repeating units includes two first sub-pixels, one second sub-pixel, and one third sub-pixel. Each of the first sub-pixel, the second sub-pixel and the third sub-pixel includes a pixel defining layer, the pixel defining layer includes a pixel defining layer opening to define an effective light emitting region of each sub-pixel; a plurality of first sub-pixels are arranged along the second direction to form a plurality of first sub-pixel groups, orthographic projections of pixel defining layer openings of the first sub-pixels in adjacent ones of the plurality of first sub-pixel groups on a straight line parallel to the second direction do not overlap each other.

First claim

What is claimed is:

1. A pixel arrangement structure, comprising a plurality of repeating units, wherein
at least one of the plurality of repeating units comprises two first sub-pixels, one second sub-pixel, and one third sub-pixel;
in at least one of the plurality of repeating units, the two first sub-pixels form a first sub-pixel pair; the one second sub-pixel, the first sub-pixel pair, and the one third sub-pixel are arranged in a first direction; and the two first sub-pixels in the first sub-pixel pair are arranged in a second direction intersecting the first direction;
the plurality of repeating units are arranged in the first direction to form a plurality of repeating unit groups, and the plurality of repeating unit groups are arranged in the second direction;
the repeating units in adjacent ones of the plurality of repeating unit groups are misaligned with each other in the second direction, and the repeating units in two repeating unit groups separated from each other by one repeating unit group are aligned with each other in the second direction,
at least one of the first sub-pixel, the second sub-pixel and the third sub-pixel comprises a pixel defining layer, the pixel defining layer comprises a pixel defining layer opening to define an effective light emitting region of each sub-pixel; a plurality of first sub-pixels are arranged along the second direction to form a plurality of first sub-pixel groups, orthographic projections of pixel defining layer openings of the first sub-pixels in adjacent ones of the plurality of first sub-pixel groups on a straight line parallel to the second direction do not overlap each other.

2. The pixel arrangement structure according to claim 1 , wherein at least one of the first sub-pixel, the second sub-pixel and the third sub-pixel further comprises an anode electrode, an orthographic projection of the pixel defining layer opening on a plane defined by the first direction and the second direction falls within an orthographic projection of the anode electrode on the plane.

3. The pixel arrangement structure according to claim 2 , wherein at least one of the first sub-pixel, the second sub-pixel and the third sub-pixel further comprises a light emitting functional layer, the orthographic projection of the anode electrode on the plane falls within an orthographic projection of the light emitting functional layer on the plane,
at least one of the first sub-pixel, the second sub-pixel and the third sub-pixel further comprises a connection electrode; in each of the first sub-pixel, the second sub-pixel and the third sub-pixel, the connection electrode is electrically connected with the anode electrode, and the connection electrode at least partially overlaps with the light emitting functional layer.

4. The pixel arrangement structure according to claim 3 , wherein, in at least one of the second sub-pixel and the third sub-pixel, the light emitting functional layer comprises an annular portion on the pixel defining layer surrounding the pixel defining layer opening; the light emitting functional layer of the first sub-pixel pair comprises an annular portion on the pixel defining layer surrounding the pixel defining layer openings of both of the two first sub-pixels and a connection portion on the pixel defining layer between the pixel defining layer openings of the two first sub-pixels; in each of the first sub-pixel pair, the second sub-pixel and the third sub-pixel, the annular portion of the light emitting functional layer has an equal width at each position.

5. The pixel arrangement structure according to claim 4 , wherein at least the annular portion and the connection portion of the light emitting functional layer of the first sub-pixel pair are configured to be a continuous layer structure.

6. The pixel arrangement structure according to claim 5 , wherein, for the light emitting layer of the first sub-pixel pair, the light emitting layer of the second sub-pixel and the light emitting layer of the third sub-pixel, any two adjacent light emitting layers of the three light emitting layers in the first direction abut with each other.

7. The pixel arrangement structure according to claim 4 , wherein an area of the light emitting functional layer of one first sub-pixel pair as a whole is greater than an area of the light emitting functional layer of one second sub-pixel, the area of the light emitting functional layer of the one second sub-pixel is greater than an area of the light emitting functional layer of one third sub-pixel, the first sub-pixel is a green sub-pixel, the second sub-pixel is a blue sub-pixel, and the third sub-pixel is a red sub-pixel.

8. The pixel arrangement structure according to claim 7 , wherein the light emitting functional layers of the first sub-pixel pair and the second sub-pixel adjacent to each other in the second direction abut with each other, the light emitting functional layers of the third sub-pixel and the first sub-pixel pair adjacent to each other in the second direction are spaced apart from each other, the light emitting functional layers of the third sub-pixel and the second sub-pixel adjacent to each other in the second direction are spaced apart from each other, and the interval between the light emitting functional layers of the third sub-pixel and the second sub-pixel adjacent to each other in the second direction is greater than the interval of the light emitting functional layers of the third sub-pixel and the first sub-pixel pair adjacent to each other in the second direction.

9. The pixel arrangement structure according to claim 3 , wherein
at least one of the first sub-pixel, the second sub-pixel and the third sub-pixel comprises a sub-pixel circuit for driving, the sub-pixel circuit is disposed on a side of the anode electrode away from the light emitting functional layer, the anode electrode is connected to the sub-pixel circuit through the connection electrode,
the pixel arrangement structure further comprises: a plurality of reset power signal lines extending in the first direction and a plurality of data lines extending in the second direction, the plurality of reset power signal lines and the plurality of data lines cross each other to define a plurality of sub-circuit regions, the sub-pixel circuits in respective sub-pixels of the plurality of repeating units are disposed in the plurality of sub-circuit regions.

10. The pixel arrangement structure according to claim 9 , wherein, in one repeating unit, the sub-pixel circuit of the second sub-pixel at least partially overlaps the anode electrode of the second sub-pixel, the sub-pixel circuit of the third sub-pixel at least partially overlaps the anode electrode of the third sub-pixel, the sub-pixel circuit of one first sub-pixel of the first sub-pixel pair is located between the sub-pixel circuits of the second sub-pixel and the third sub-pixel, and partially overlaps two anode electrodes of the first sub-pixel pair, the sub-pixel circuit of the other first sub-pixel of the first sub-pixel pair is located between the sub-pixel circuits of one second sub-pixel and one third sub-pixel in another repeating unit group adjacent to the other first sub-pixel, and the sub-pixel circuits of the two first sub-pixels in the first sub-pixel pair are arranged in the second direction.

11. The pixel arrangement structure according to claim 1 , comprising a first virtual pixel and a second virtual pixel, one first virtual pixel comprising one of the first sub-pixel and one of the second sub-pixel, and one second virtual pixel comprising one of the first sub-pixel and one of the third sub-pixel,
wherein the plurality of repeating unit groups arranged in the second direction are allo

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Huangfu Lujiang
• Liu Libin
• Ji Fengli
• Jin Xiaodan
• Liang Yinan
• Li Mei
• Zhang Jie
• Luo Chang
• Wu Jianpeng
• Wang Hongli

Classifications

• H10K59/353

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

• G09G3/3225 Primary

  using an active matrix · CPC title

• G09G3/3233

  with pixel circuitry controlling the current through the light-emitting element · CPC title

• G09G2310/0251

  Precharge or discharge of pixel before applying new pixel voltage · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title