Thin film transistor array substrate and organic light-emitting display device including the same

Patent metadata

Field	Value
Publication number	US-10546906-B2
Application number	US-201816138884-A
Country	US
Kind code	B2
Filing date	Sep 21, 2018
Priority date	Mar 27, 2013
Publication date	Jan 28, 2020
Grant date	Jan 28, 2020

Abstract

A thin film transistor array substrate having a pixel arrangement structure includes a first sub-pixel for displaying a first color and a second sub-pixel for displaying a second color alternately located in a first column, and a third sub-pixel for displaying a third color in a second column adjacent to the first column, and via holes of the first through third sub-pixels in a same row are at different positions.

First claim

What is claimed is:

1. An organic light-emitting display device comprising:
a first pixel configured to display a first color in a first column;
a second pixel configured to display a second color and alternately located relative to the first pixel in the first column; and
a third pixel configured to display a third color in a second column adjacent to the first column,
wherein each of the first through third pixels comprises:
a pixel circuit;
a first electrode coupled to the pixel circuit;
a pixel definition layer on the first electrode and including an opening for exposing a part of the first electrode;
an emission layer on the first electrode;
a second electrode facing the first electrode; and
a via hole in an insulating layer between the pixel circuit and the first electrode, and exposing a portion of the pixel circuit, and
wherein an imaginary straight line connecting respective centers of via holes of the first pixel and the second pixel is between the openings of the first pixel and the second pixel, and the imaginary straight line does not cross the openings of the first pixel and the second pixel.

2. The organic light-emitting display device of claim 1 , wherein a size of the first electrode of the first pixel and a size of the first electrode of the second pixel are smaller than a size of the first electrode of the third pixel.

3. The organic light-emitting display device of claim 1 , wherein each of imaginary straight lines connecting centers of the via holes of two selected from the first pixel, the second pixel and the third pixel are not substantially parallel with a column direction and a row direction in a plan view.

4. The organic light-emitting display device of claim 1 , wherein each of the via holes of the first through third pixels is overlapped with the respective first electrode.

5. The organic light-emitting display device of claim 1 , wherein each of the via holes of the first through third pixels corresponds to a portion of the respective first electrode.

6. The organic light-emitting display device of claim 1 , wherein the first electrode is connected to the pixel circuit through the via hole in the insulating layer.

7. An organic light-emitting display device comprising:
a first pixel configured to display a first color in a first column;
a second pixel configured to display a second color and alternately located relative to the first pixel in the first column;
a third pixel configured to display a third color in a second column adjacent to the first column; and
a fourth pixel configured to display the third color in a third column adjacent to the first column,
wherein each of the first through fourth pixels comprises:
a pixel circuit;
a first electrode coupled to the pixel circuit;
a pixel definition layer on the first electrode and including an opening for exposing a part of the first electrode;
an emission layer on the first electrode;
a second electrode facing the first electrode; and
a via hole in an insulating layer between the pixel circuit and the first electrode, and exposing a portion of the pixel circuit,
wherein a first imaginary straight line extending along a side of the opening of the first pixel, a second imaginary straight line extending along a side of the opening of the second pixel, a third imaginary straight line extending along a side of the opening of the third pixel, and a fourth imaginary straight line extending along a side of the opening of the fourth pixel define an imaginary quadrilateral, and
wherein the via hole of the first pixel and the via hole of the second pixel are in an area defined by the imaginary quadrilateral.

8. The organic light-emitting display device of claim 7 , wherein the imaginary quadrilateral is a rectangle.

9. The organic light-emitting display device of claim 7 , wherein the imaginary quadrilateral is between the opening of the first pixel and the opening of the second pixel, and
wherein the imaginary quadrilateral is between the opening of the third pixel and the opening of the fourth pixel.

10. The organic light-emitting display device of claim 7 , wherein the first electrode is connected to the pixel circuit through the via hole in the insulating layer.

11. The organic light-emitting display device of claim 7 , wherein a size of the first electrode of the first pixel and a size of the first electrode of the second pixel are smaller than a size of the first electrode of the third pixel.

12. The organic light-emitting display device of claim 7 , wherein the fourth pixel faces the third pixel.

13. An organic light-emitting display device comprising:
a first pixel configured to display a first color in a first column;
a second pixel configured to display a second color and alternately located relative to the first pixel in the first column;
a third pixel configured to display a third color in a second column adjacent to the first column; and
a fourth pixel configured to display the third color in a third column adjacent to the first column,
wherein each of the first through fourth pixels comprises:
a pixel circuit;
a first electrode coupled to the pixel circuit;
a pixel definition layer on the first electrode and including an opening for exposing a part of the first electrode;
an emission layer on the first electrode;
a second electrode facing the first electrode; and
a via hole in an insulating layer between the pixel circuit and the first electrode, and exposing a portion of the pixel circuit,
wherein a center of the opening of the first pixel, a center of the opening of the second pixel, a center of the opening of the third pixel, and a center of the opening of the fourth pixel define an imaginary quadrilateral, and
wherein the via hole of the first pixel and the via hole of the second pixel overlap an area defined by the imaginary quadrilateral.

14. The organic light-emitting display device of claim 13 , wherein the imaginary quadrilateral is a parallelogram.

15. The organic light-emitting display device of claim 13 , wherein the first pixel is at least partially in an area defined by the imaginary quadrilateral.

16. The organic light-emitting display device of claim 13 , wherein the second pixel is at least partially in an area defined by the imaginary quadrilateral.

17. The organic light-emitting display device of claim 13 , wherein the second pixel is completely in an area defined by the imaginary quadrilateral.

18. The organic light-emitting display device of claim 13 , wherein a size of the first electrode of the first pixel and a size of the first electrode of the second pixel are smaller than a size of the first electrode of the third pixel.

19. The organic light-emitting display device of claim 13 , wherein the first electrode is connected to the pixel circuit through the via hole in the insulating layer.

20. The organic light-emitting display device of claim 13 , wherein the fourth pixel faces the third pixel.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Won-Se

Classifications

• G09G2300/0452

  Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components · CPC title

• G09G2300/0819

  used for counteracting undesired variations, e.g. feedback or autozeroing · CPC title

• G09G2300/0465

  Improved aperture ratio, e.g. by size reduction of the pixel circuit, e.g. for improving the pixel density or the maximum displayable luminance or brightness · CPC title

• G09G2310/0262

  The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes · CPC title

• G09G3/3233 Primary

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