Organic light-emitting diode display

Abstract

An organic light-emitting diode display is disclosed. In one aspect, the display includes a plurality of pixels formed in a plurality of intersection areas of a plurality of data lines and a plurality of scan lines. Each of the pixels includes a storage capacitor configured to store a data voltage, at least one target transistor having one end electrically connected to a current path of the storage capacitor, an organic light emitting layer, and a first electrode of an OLED formed over the organic light emitting layer. The first electrode includes a first electrode extension configured to block at least a portion of the target transistor from light.

What is claimed is: 
     
       1. An organic light-emitting diode (OLED) display, comprising:
 a plurality of pixels formed in a plurality of intersection areas of a plurality of data lines and a plurality of scan lines, 
 wherein each of the pixels includes:
 a storage capacitor configured to store a data voltage; 
 at least one target transistor having one end electrically connected to a current path of the storage capacitor; 
 an organic light emitting layer; and 
 a first electrode of an OLED formed below the organic light emitting layer, and 
 wherein the first electrode includes a first electrode extension configured to block at least a portion of the at least one target transistor from light including at least one of external light and light leakage current from the storage capacitor, wherein each of the pixels further includes: 
 a driving transistor configured to adjust an amount of current flowing in the OLED; and 
 a compensation transistor having a first end electrically connected to a gate electrode of the driving transistor and a first end of the storage capacitor, and a second end electrically connected to a first end of the driving transistor, wherein the at least one target transistor includes the compensation transistor, wherein the first electrode extension of a first one of the pixels in a first row of the OLED display overlaps the compensation transistor of a second other one of the pixels of the OLED display in a second row adjacent the first row to block the compensation transistor of the second pixel from light, and 
 
 wherein no portion of the compensation transistor overlaps the organic light emitting layer of the OLED display. 
 
     
     
       2. The OLED display of  claim 1 , wherein each of the pixels further includes an initialization transistor having a first end electrically connected to a first end of the storage capacitor and a second end electrically connected to an initialization voltage line, and wherein the at least one target transistor includes the initialization transistor. 
     
     
       3. The OLED display of  claim 2 , wherein the first electrode extension further overlaps the initialization transistor of the OLED display. 
     
     
       4. The OLED display of  claim 2 , wherein at least one of the initialization transistor and the compensation transistor includes a plurality of gate electrodes. 
     
     
       5. The OLED display of  claim 2 , wherein each of the pixels corresponds to one among a first color pixel, a second color pixel, and a third color pixel, wherein the first electrode extensions of the first and second color pixels are further configured to respectively block the initialization and compensation transistors included in the first and second color pixels from the light by as much as a first area, wherein the first electrode extension of the third color pixel is further configured to block the initialization and compensation transistors included in the third color pixel from the light by as much as a second area, and wherein the first area is larger than the second area. 
     
     
       6. The OLED display of  claim 5 , wherein the first electrode extensions of the first and second color pixels are further configured to completely block the initialization and compensation transistor included in the first and second color pixels from the light, wherein the first electrode extension of the third color pixel is further configured to completely block the initialization transistor included in the third color pixel from the light. 
     
     
       7. The OLED display of  claim 6 , wherein the OLED display comprises a mono color display device. 
     
     
       8. The OLED display of  claim 5 , wherein the first electrode extensions of the first and second color pixels are further configured to completely block the initialization and compensation transistors included in the first and second color pixels from the light, and wherein the first electrode extension of the third color pixel is further configured to not block the initialization and compensation transistors included in the third color pixel from the light. 
     
     
       9. The OLED display of  claim 8 , wherein the first, second and third colors respectively include red, green, and blue. 
     
     
       10. The OLED display of  claim 1 , wherein a first organic light emitting layer of one of the pixels is adjacent to a second organic emitting layer, and wherein the first and second organic light emitting layers have a minimum interval therebetween formed by a depositing mask. 
     
     
       11. The OLED display of  claim 10 , wherein the first electrode is formed below the organic light emitting layer and includes:
 the first electrode extension; and 
 a contact configured to be applied with an electrical signal. 
 
     
     
       12. The OLED display of  claim 1 , wherein the OLED display is configured to be driven in a low power consumption mode at a first frequency below a predetermined frequency, and wherein a time in which the storage capacitor holds a recoded voltage in the low power consumption mode is greater than a time in which the storage capacitor holds the recorded voltage upon a normal driving. 
     
     
       13. An organic light-emitting diode (OLED) display, comprising:
 a storage capacitor having a first end electrically connected to a power source and configured to store a data voltage; 
 at least one target transistor having a first end electrically connected to a second end of the storage capacitor; 
 an OLED configured to receive the data voltage from the storage capacitor and including a first electrode; and 
 a driving transistor configured to adjust an amount of current flowing in the OLED; 
 wherein the OLED includes an organic light emitting layer, and 
 wherein the first electrode includes a first electrode extension formed over a portion of the at least one target transistor and configured to block at least a portion of the at least one target transistor from light including at least one of external light and light leakage current from the storage capacitor, 
 wherein the at least one target transistor includes at least one compensation transistor including a compensation transistor having a first end electrically connected to a gate electrode of the driving transistor and a first the second end of the storage capacitor, and a second end electrically connected to a first end of the driving transistor, 
 wherein the at least one target transistor includes the at least one compensation transistor, 
 wherein the first electrode extension of a first one of the pixels in a first row of the OLED display overlaps the compensation transistor a second other one of the pixels in a second row of the OLED display adjacent the first row to block the compensation transistor of the second pixel from light, and 
 wherein no portion of the compensation transistor overlaps the organic light emitting layer of the OLED display. 
 
     
     
       14. The OLED display of  claim 13 , wherein the at least one target transistor further includes:
 at least one initialization transistor including a drain electrode electrically connected to the second end of the storage capacitor. 
 
     
     
       15. The OLED display of  claim 14 , further comprising a plurality of pixels each including the at least one target transistor. 
     
     
       16. The OLED display of  claim 15 , wherein the at least one compensation transistor further includes second and third compensation transistors overlapping the first electrode extension. 
     
     
       17. The OLED display of  claim 16 , wherein the at least one initialization transistor includes first to third initialization transistors overlapping the first electrode. 
     
     
       18. The OLED display of  claim 13 , wherein the first electrode has four sides, and wherein the first electrode extension is formed adjacent to three of the four sides of the first electrode. 
     
     
       19. The OLED display of  claim 13 , wherein the light includes external light or leakage light from a plurality of pixels other than a selected pixel including the OLED. 
     
     
       20. An organic light-emitting diode (OLED) display, comprising:
 a plurality of pixels, wherein each of the pixels are connected to a corresponding data line of a plurality of data lines and a corresponding scan line of a plurality of scan lines,   wherein each of the pixels includes:   a storage capacitor configured to store a data voltage;   a compensation transistor having one end electrically connected to a current path of the storage capacitor;   an organic light emitting layer;   a first electrode of an OLED formed below the organic light emitting layer; and   a driving transistor configured to adjust an amount of current flowing in the OLED, and   wherein an electrode extension of the first electrode blocks at least a portion of the compensation transistor from light to prevent an occurrence of a light leakage current on a current leakage path of the storage capacitor,   wherein the compensation transistor has a first end electrically connected to a gate electrode of the driving transistor and a first end of the storage capacitor, and a second end electrically connected to a first end of the driving transistor, wherein the electrode extension of the first electrode of a first one of the pixels overlaps the compensation transistor of a second other one of the pixels adjacent the first pixel, and   wherein no portion of the compensation transistor overlaps the organic light emitting layer of the OLED display.   
     
     
       21. The OLED display of  claim 20 , wherein each of the pixels further includes an initialization transistor having a first end electrically connected to a first end of the storage capacitor and a second end electrically connected to an initialization voltage line. 
     
     
       22. The OLED display of  claim 21 , wherein the electrode extension of the first electrode further overlaps the initialization transistor of the second pixel. 
     
     
       23. The OLED display of  claim 21 , wherein at least one of the initialization transistor and the compensation transistor includes a plurality of gate electrodes. 
     
     
       24. The OLED display of  claim 21 , wherein a first organic light emitting layer of one of the pixels is adjacent to a second organic emitting layer, and wherein the first and second organic light emitting layers have a minimum interval therebetween formed by a depositing mask. 
     
     
       25. The OLED display of  claim 24 , wherein the first electrode is formed below the organic light emitting layer and includes a contact configured to be applied with an electrical signal. 
     
     
       26. The OLED display of  claim 20 , wherein each of the pixels corresponds to one among a first color pixel, a second color pixel, and a third color pixel, wherein the electrode extension of the first electrode of the first and second color pixels are further configured to respectively block the compensation transistor included in the first and second color pixels from the light by as much as a first area, wherein the electrode extension of the first electrode of the third color pixel is further configured to block the compensation transistor included in the third color pixel from the light by as much as a second area, and wherein the first area is larger than the second area.  
     
     
       27. The OLED display of  claim 26 , wherein the electrode extension of the first electrode of the first and second color pixels are further configured to completely block the compensation transistor included in the first and second color pixels from the light, wherein the electrode extension of the first electrode of the third color pixel is further configured to completely block the initialization transistor included in the third color pixel from the light. 
     
     
       28. The OLED display of  claim 27 , wherein the OLED display comprises a mono color display device.  
     
     
       29. The OLED display of  claim 26 , wherein the electrode extension of the first electrode of the first and second color pixels are further configured to completely block the compensation transistor included in the first and second color pixels from the light, and wherein the electrode extension of the first electrode of the third color pixel is further configured to not block the compensation transistor included in the third color pixel from the light. 
     
     
       30. The OLED display of  claim 29 , wherein the first, second and third colors respectively include red, green, and blue. 
     
     
       31. The OLED display of  claim 21 , wherein the OLED display is configured to be driven in a low power consumption mode at a first frequency below a predetermined frequency, and wherein a time in which the storage capacitor holds a recoded voltage in the low power consumption mode is greater than a time in which the storage capacitor holds the recorded voltage upon a normal driving. 
     
     
       32. An organic light-emitting diode (OLED) display, comprising:
 a storage capacitor having a first end electrically connected to a power source and configured to store a data voltage;   at least one compensation transistor having a first end electrically connected to a second end of the storage capacitor;   an OLED configured to receive the data voltage from the storage capacitor and including a first electrode; and   a driving transistor configured to adjust an amount of current flowing in the OLED;   wherein the OLED includes an organic light emitting layer, and   wherein an electrode extension of the first electrode is formed over a portion of the at least one compensation transistor and configured to block at least a portion of the at least one compensation transistor from light wherein an electrode extension of the first electrode blocks at least a portion of the compensation transistor from light to prevent an occurrence of a light leakage current on a current leakage path of the storage capacitor,   wherein the at least one compensation transistor includes a compensation transistor has a first end electrically connected to a gate electrode of the driving transistor and second end of the storage capacitor, and a second end electrically connected to a first end of the driving transistor,   wherein the electrode extension of the first electrode of a first one of the pixels overlaps the compensation transistor a second other one of the pixels adjacent the first pixel to block the compensation transistor of the second pixel from light, and   wherein no portion of the compensation transistor overlaps the organic light emitting layer of the OLED display.   
     
     
       33. The OLED display of  claim 32 , further comprising:
 at least one initialization transistor including a drain electrode electrically connected to the second end of the storage capacitor.   
     
     
       34. The OLED display of  claim 32 , wherein the at least one compensation transistor further includes second and third compensation transistors overlapping the electrode extension of the first electrode.  
     
     
       35. The OLED display of  claim 33 , wherein the at least one initialization transistor includes first to third initialization transistors overlapping the electrode extension of the first electrode. 
     
     
       36. The OLED display of  claim 32 , wherein the first electrode has four sides, and wherein the electrode extension is formed adjacent to three of the four sides of the first electrode. 
     
     
       37. An organic light-emitting diode (OLED) display, comprising:
 a plurality of pixels, wherein each of the pixels are connected to a corresponding data line of a plurality of data lines and a corresponding scan line of a plurality of scan lines,   wherein each of the pixels includes:   a storage capacitor configured to store a data voltage;   an initialization transistor having a first end electrically connected to a first end of the storage capacitor and a second end electrically connected to an initialization voltage line;   an organic light emitting layer;   a first electrode of an OLED formed below the organic light emitting layer;   a driving transistor configured to adjust an amount of current flowing in the OLED; and   a compensation transistor having a first end electrically connected to a gate electrode of the driving transistor and a first end of the storage capacitor, and a second end electrically connected to a first end of the driving transistor, and   wherein an electrode extension of the first electrode blocks at least a portion of the initialization transistor from light wherein an electrode extension of the first electrode blocks at least a portion of the compensation transistor from light to prevent an occurrence of a light leakage current on a current leakage path of the storage capacitor,   wherein the electrode extension of the first electrode of a first one of the pixels overlaps the initialization transistor and the compensation transistor of a second other one of the pixels adjacent the first pixel, and   wherein no portion of one of a plurality of transistors of the initialization transistor overlaps the organic light emitting layer of the OLED display.   
     
     
       38. The OLED display of  claim 37 , wherein each of the pixels further includes a compensation transistor having a first end electrically connected to a gate electrode of the driving transistor and a first end of the storage capacitor, and a second end electrically connected to a first end of the driving transistor. 
     
     
       39. The OLED display of  claim 38 , wherein the electrode extension of the first electrode further overlaps the compensation transistor of the second pixel. 
     
     
       40. The OLED display of  claim 38 , wherein at least one of the initialization transistor and the compensation transistor includes a plurality of gate electrodes. 
     
     
       41. The OLED display of  claim 38 , wherein a first organic light emitting layer of one of the pixels is adjacent to a second organic emitting layer, and wherein the first and second organic light emitting layers have a minimum interval therebetween formed by a depositing mask. 
     
     
       42. The OLED display of  claim 41 , wherein the first electrode is formed below the organic light emitting layer and includes a contact configured to be applied with an electrical signal. 
     
     
       43. The OLED display of  claim 37 , wherein the OLED display is configured to be driven in a low power consumption mode at a first frequency below a predetermined frequency, and wherein a time in which the storage capacitor holds a recoded voltage in the low power consumption mode is greater than a time in which the storage capacitor holds the recorded voltage upon a normal driving. 
     
     
       44. The OLED display of  claim 37 , wherein each of the pixels corresponds to one among a first color pixel, a second color pixel, and a third color pixel, wherein the electrode extension of the first electrode of the first and second color pixels are further configured to respectively block the initialization transistor included in the first and second color pixels from the light by as much as a first area, wherein the electrode extension of the first electrode of the third color pixel is further configured to block the initialization transistor included in the third color pixel from the light by as much as a second area, and wherein the first area is larger than the second area. 
     
     
       45. The OLED display of  claim 44 , wherein the electrode extension of the first electrode of the first and second color pixels are further configured to completely block the compensation transistor included in the first and second color pixels from the light, wherein the electrode extension of the first electrode of the third color pixel is further configured to completely block the initialization transistor included in the third color pixel from the light. 
     
     
       46. The OLED display of  claim 45 , wherein the OLED display comprises a mono color display device. 
     
     
       47. The OLED display of  claim 44 , wherein the electrode extension of the first electrode of the first and second color pixels are further configured to completely block the compensation transistor included in the first and second color pixels from the light, and wherein the electrode extension of the first electrode of the third color pixel is further configured to not block the compensation transistor included in the third color pixel from the light. 
     
     
       48. The OLED display of  claim 47 , wherein the first, second and third colors respectively include red, green, and blue.