Organic electroluminescence emitting display

• US RE48,044 E1
• Filed: 04/01/2016
• Issued: 06/09/2020
• Est. Priority Date: 10/28/2010
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kang, Ki-Nyeng, Kim, Na-Young
• Primary Examiner(s): Rimell, Samuel G
• Application Number:
  US15/089,311
• Time in Patent Office: 1,530 Days
• CPC Class Codes: N/A

Abstract

An organic light emitting display capable of substantially preventing IR drop of a power source wiring line and coupling of data lines is disclosed. In one aspect, the organic light emitting display includes pairs of data lines between adjacent sub-pixels. The data lines are arranged to run parallel with a coupling blocking wiring line provided between each pair.

Claims

1. An organic light emitting display, comprising:

a plurality of sub-pixels formed near intersections of a plurality of gate lines and a plurality of data lines; and

a driving power source wiring line connected to two adjacent sub-pixels to supply a power source voltage for driving the plurality of sub-pixels,

wherein the plurality of data lines comprises a pair of data lines arranged to run parallel with the driving power source wiring line with sub-pixels interposed between the driving power source wiring line and the pair of data lines, and

a coupling blocking wiring line between the data lines that of the pair, wherein the driving power source wiring line has a mesh structure formed of a plurality of column direction driving power source wiring lines running parallel with the data lines and a plurality of row direction driving power source wiring lines running parallel with the gate lines, and wherein the coupling blocking wiring line has a mesh structure formed of a plurality of column direction coupling blocking wiring lines running parallel with the driving power source lines, but separated by sub-pixels interposed between the coupling blocking wiring lines and the driving power source lines, and a plurality of row direction coupling blocking wiring lines running parallel with the gate lines.

2. The organic light emitting display as claimed in claim 1, wherein the coupling blocking wiring line is a compensation signal wiring line or an initializing power source wiring line.

3. The organic light emitting display as claimed in claim 2, wherein the coupling blocking wiring line comprises the compensation signal wiring line and is part of the mesh structure in which the compensation signal wiring line is connected to compensation signal wiring lines running parallel with the gate lines.

4. The organic light emitting display as claimed in claim 2, wherein the coupling blocking wiring line comprises the compensation signal wiring line and is formed on the same layer as the data line of the same material.

5. The organic light emitting display as claimed in claim 2, wherein the coupling blocking wiring line comprises the initializing power source wiring line and is provided to run parallel with the driving power source wiring line.

6. The organic light emitting display as claimed in claim 2, wherein the coupling blocking wiring line comprises the initializing power source wiring line and is formed on the same layer as the data line of the same material.

7. The organic light emitting display as claimed in claim 1, wherein the sub-pixel each of the plurality of subpixels comprises:

an organic light emitting diode (OLED);

a driving transistor electrically coupled to the OLED to supply driving current;

a capacitor configured to maintain a data voltage applied to a gate electrode of the driving transistor;

a switching transistor configured to supply a data signal from the data line to the capacitor in response to a gate signal of the gate line; and

a compensation transistor configured to transmit driving current corresponding to the data signal to the OLED.

8. The organic light emitting display as claimed in claim 7,

wherein the coupling blocking wiring line comprises a compensation signal wiring line, and

wherein a gate of the compensation transistor is directly connected to the compensation signal wiring line.

9. The organic light emitting display as claimed in claim 7, wherein the capacitor is electrically coupled between the driving power source wiring line and a source or drain electrode of the switching transistor.

10. The organic light emitting display as claimed in claim 1, wherein the sub-pixel comprises:

an OLED for displaying an image;

a first switching element configured to transmit driving current to the OLED according to a data signal supplied from the data line;

a capacitor configured to store a voltage corresponding to the data signal;

a second switching element configured to be turned on when a gate signal is supplied to the gate line, and when turned on to supply the data signal to the capacitor;

a third switching element configured to be turned on when the gate signal is supplied to the gate line, and when turned on to diode connect the first switching element;

a fourth switching element configured to initialize a voltage stored in the capacitor, the capacitor connected to a drain or source of the fourth switching element and a second electrode of the second switching element;

a fifth switching element configured to transmit the driving power source voltage to the first switching element in accordance with an emission control signal supplied by an emission control wiring line; and

a sixth switching element configured to control driving current that flows from the first switching element to the OLED in accordance with the emission control signal of the emission control wiring line.

11. The organic light emitting display as claimed in claim 10, wherein the coupling blocking wiring line comprises an initializing power source wiring line.

12. The organic light emitting display as claimed in claim 11, wherein the initializing power source wiring lines are electrically directly coupled to a source or drain of the fourth switching element.

13. The organic light emitting display as claimed in claim 11,

wherein the initializing power source wiring line is connected to the two adjacent sub-pixels;

and

wherein one of the sub-pixels connected to the initializing power source wiring

line is one of the two sub-pixels connected to the driving power source wiring line.

14. The organic light emitting display as claimed in claim 11, wherein the initializing power source wiring line is coupled to the fourth switching elements of the adjacent sub-pixels.

15. An organic light emitting display, comprising:

a plurality of sub-pixels formed near intersections of a plurality of gate lines and a plurality of data lines;

a plurality of driving power source wiring lines having a mesh structure including a plurality of column direction driving power source wiring lines parallel with the data lines and a plurality of row direction driving power source wiring lines parallel with the gate lines; and

a plurality of coupling blocking wiring lines having a mesh structure including a plurality of column direction coupling blocking wiring lines parallel with the column direction driving power source wiring lines and a plurality of row direction coupling blocking wiring lines parallel with the gate lines,

wherein one of the column direction driving power source wiring lines is between first and second column direction coupling blocking wiring lines of the column direction coupling blocking wiring lines,

wherein the first and second column direction coupling blocking wiring lines are separated by first and second sub-pixels of the sub-pixels,

wherein the first sub-pixels are interposed between the first column direction coupling blocking wiring line and the one of the column direction driving power source wiring lines, and

wherein the second sub-pixels are interposed between the second column direction coupling blocking wiring line and the one of the column direction driving power source wiring lines.

16. The organic light emitting display as claimed in claim 15, wherein one of the column direction coupling blocking wiring lines is interposed between two adjacent data lines of the data lines.

17. The organic light emitting display as claimed in claim 15, wherein the column direction coupling blocking wiring lines are formed on the same layer as the data lines of a same material.

18. The organic light emitting display as claimed in claim 15, wherein one of the sub-pixels comprises:

an organic light emitting diode (OLED);

a first transistor including a first electrode connected to one of the driving power source wiring lines and a second electrode connected to the OLED;

a first capacitor including a first electrode and a second electrode, the first electrode of the first capacitor connected to a gate electrode of the first transistor;

a second transistor including a first electrode connected to one of the data lines and a second electrode connected to the second electrode of the first capacitor; and

a third transistor including a first electrode connected to the second electrode of the first transistor and a second electrode connected to the gate electrode of the first transistor.

19. The organic light emitting display as claimed in claim 18, wherein the one of the sub-pixels further comprises a second capacitor including a first electrode connected to the one of the driving power source wiring lines and a second electrode connected to the second electrode of the second transistor.

20. An organic light emitting display, comprising:

a plurality of gate lines in a first direction;

a plurality of data lines in a second direction crossing the first direction;

a plurality of sub-pixels formed near intersections of the gate lines and the data lines;

a plurality of first power lines having a mesh structure including a plurality of first direction first power lines and a plurality of second direction first power lines, the plurality of second direction first power lines being spaced apart from each other at intervals of at least two sub-pixel columns; and

a plurality of second power lines having a mesh structure including a plurality of first direction second power lines and a plurality of second direction second power lines, the plurality of second direction second power lines being spaced apart from each other at intervals of at least two sub-pixel columns,

wherein the data lines comprise a pair of data lines adjacent each other with one of the second direction second power lines interposed between the pair of data lines without a pixel between the one of the second direction second power lines and either of the pair of data lines,

wherein only one sub-pixel column is arranged between an adjacent pair of one of the second direction first power lines and one of the second direction second power lines,

wherein each sub-pixel column comprises a plurality of sub-pixels sequentially arranged along the second direction and sharing one of the plurality of data lines, and

wherein a row of the organic light emitting display in the first direction includes a sequential arrangement of one of the second direction first power lines, one of the sub-pixels, one of the data lines, one of the second direction second power lines, and one of the data lines.

21. The organic light emitting display as claimed in claim 20, wherein one of the sub-pixels comprises:

an organic light emitting diode (OLED);

a first transistor including a first electrode connected to one of the first power lines and a second electrode connected to the OLED;

a first capacitor including a first electrode and a second electrode, the first electrode of the first capacitor connected to a gate electrode of the first transistor;

a second transistor including a first electrode connected to one of the data lines and a second electrode connected to the second electrode of the first capacitor; and

a third transistor including a first electrode connected to the second electrode of the first transistor and a second electrode connected to the gate electrode of the first transistor.

22. The organic light emitting display as claimed in claim 21, wherein the one of the sub-pixels further comprises a second capacitor including a first electrode connected to the one of the first power lines and a second electrode connected to the second electrode of the second transistor.

23. An organic light emitting display, comprising:

a plurality of gate lines in a first direction;

a plurality of data lines in a second direction;

a plurality of sub-pixels formed near intersections of the gate lines and the data lines;

a plurality of first power lines having a mesh structure including first power lines in the first direction and first power lines in the second direction, the first power lines in the second direction being spaced apart from each other at intervals of at least two sub-pixel columns; and

a plurality of second power lines having a mesh structure including second power lines in the first direction and second power lines in the second direction, the second power lines in the second direction being spaced apart from each other at intervals of at least two sub-pixel columns,

wherein the second power lines in the second direction are disposed between two adjacent data lines of the data lines without a sub-pixel between the two adjacent data lines and the second power lines in the second direction are separated by the sub-pixels interposed between the second power lines in the second direction and the first power lines in the second direction,

wherein only one sub-pixel column is arranged between an adjacent pair of one of the first power lines in the second direction and one of the second power lines in the second direction,

wherein each sub-pixel column comprises a plurality of sub-pixels sequentially arranged along the second direction and sharing one of the plurality of data lines, and

wherein a row of the organic light emitting display in the first direction includes a sequential arrangement of one of the first power lines in the second direction, one of the sub-pixels, one of the data lines, one of the second power lines in the second direction, and one of the data lines.

24. The organic light emitting display as claimed in claim 23, wherein one of the sub-pixels comprises:

an organic light emitting diode (OLED);

a first transistor including a first electrode connected to one of the first power lines and a second electrode connected to the OLED;

a first capacitor including a first electrode and a second electrode, the first electrode of the first capacitor connected to a gate electrode of the first transistor;

a second transistor including a first electrode connected to one of the data lines and a second electrode connected to the second electrode of the first capacitor; and

a third transistor including a first electrode connected to the second electrode of the first transistor and a second electrode connected to the gate electrode of the first transistor.

25. The organic light emitting display as claimed in claim 24, wherein the one of the sub-pixels further comprises a second capacitor including a first electrode connected to the one of the first power lines and a second electrode connected to the second electrode of the second transistor.

26. An organic light emitting display, comprising:

a plurality of driving power source wiring lines having a mesh structure including a plurality of column direction driving power source wiring lines and a plurality of row direction driving power source wiring lines, each adjacent pair of the plurality of column direction driving power source wiring lines being spaced apart by at least two sub-pixel columns; and

a plurality of coupling blocking wiring lines having a mesh structure including a plurality of column direction coupling blocking wiring lines and a plurality of row direction coupling blocking wiring lines, each adjacent pair of the plurality of column direction coupling blocking wiring lines being spaced apart by at least two sub-pixel columns,

wherein at least two sub-pixel columns are disposed between adjacent column direction coupling blocking wire lines along the row direction,

wherein only one sub-pixel column is arranged between an adjacent pair of one of the plurality of column direction driving power source wiring lines and one of the plurality of column direction coupling blocking wiring lines,

wherein each sub-pixel column comprises a plurality of sub-pixels sequentially arranged along a column direction, and

wherein the column direction coupling blocking wiring lines are formed on the same layer as the column direction driving power source wiring lines of a same material.

27. An organic light emitting display, comprising:

a plurality of gate lines in a first direction;

a plurality of data lines in a second direction;

a plurality of sub-pixels formed near intersections of the gate lines and the data lines;

a plurality of first power lines having a mesh structure including first power lines in the first direction and first power lines in the second direction, the first power lines in the second direction being spaced apart from each other at intervals of at least two sub-pixel columns; and

a plurality of second power lines having a mesh structure including second power lines in the first direction and second power lines in the second direction, the second power lines in the second direction being spaced apart from each other at intervals of at least two sub-pixel columns,

wherein the sub-pixels include at least two sub-pixels that are interposed between the second power lines in the second direction and the first power lines in the second direction along the first direction,

wherein only one sub-pixel column is arranged between an adjacent pair of one of the first power lines in the second direction and one of the plurality of second power lines in the second direction,

wherein each sub-pixel column comprises a plurality of sub-pixels sequentially arranged along the second direction and sharing one of the plurality of data lines, and

wherein a row of the organic light emitting display in the first direction includes a sequential arrangement of one of the plurality of data lines, one of the plurality of sub-pixels, one of the first power lines in the second direction, one of the plurality of sub-pixels, and one of the plurality data lines.

28. The organic light emitting display as claimed in claim 27, wherein one of the sub-pixels comprises:

an organic light emitting diode (OLED);

a first transistor including a first electrode connected to one of the first power lines and a second electrode connected to the OLED;

a first capacitor including a first electrode and a second electrode, the first electrode of the first capacitor connected to a gate electrode of the first transistor;

a second transistor including a first electrode connected to one of the data lines and a second electrode connected to the second electrode of the first capacitor; and

a third transistor including a first electrode connected to the second electrode of the first transistor and a second electrode connected to the gate electrode of the first transistor.

29. The organic light emitting display as claimed in claim 28, wherein the one of the sub-pixels further comprises a second capacitor including a first electrode connected to the one of the first power lines and a second electrode connected to the second electrode of the second transistor.