OLED display, information device, and method for displaying an image in OLED display

1. An OLED display, comprising:

a display panel comprising a plurality of sub-pixels;

a memory storing a compensation table containing information for Mura compensation, wherein said compensation table is initially established based on the characteristic of each sub-pixel and the average luminance of said plurality of sub-pixels; and

a processing circuit, comprising:

a current sensor sensing a sum of currents of a group of sub-pixels among said plurality of sub-pixels, wherein said compensation table is updated according to said sensed current; and

a processor receiving an image data and generating compensated image data based on said image data and said updated compensation table;

wherein said display panel displays said compensated image data by driving said plurality of sub-pixels, including said at least one sub-pixel that is sensed by the current sensor, to emit light in response to said compensated image data, whereby Mura defect is compensated.

2. The OLED display according to claim 1 , wherein said compensation table is updated according to the value of said sensed current and a predetermined relationship.

3. The OLED display according to claim 2 , wherein said predetermined relationship is associated with the color of said sub-pixel.

4. The OLED display according to claim 2 , wherein said predetermined relationship is associated with the operation temperature, the EL material and/or usage frequency of said sub-pixel.

5. The OLED display according to claim 1 , wherein said current sensor is provided for sensing a sum of currents of said plurality of sub-pixels, and said compensation table is updated according to said sum of currents.

6. The OLED display according to claim 5 , wherein said plurality of sub-pixels are located in a pre-determined area of said display panel.

7. The OLED display according to claim 6 , wherein said compensation table is updated according to the value of said sum of currents and a predetermined relationship, and said predetermined relationship is associated with said pre-determined area.

8. The OLED display according to claim 5 , wherein said current sensor senses said sum of currents at cathodes of said plurality of sub-pixels.

9. The OLED display according to claim 1 , wherein said current sensor is activated according to a user setting only during a period outside normal operation of the display panel.

10. A method for displaying an image in an OLED display, wherein the OLED display comprises a display panel comprising a plurality of sub-pixels, a memory, a current sensor and a processor, said method comprising:

establishing during manufacturing of the display panel a compensation table in said memory containing information for Mura compensation, wherein said compensation table is initially established based on the characteristic of each sub-pixel and the average luminance of said plurality of sub-pixels;

sensing a sum of currents of a group of sub-pixels among said plurality of sub-pixels by said current sensor;

updating said compensation table in said memory according to said sensed current;

receiving an image data by said processor;

generating, by said processor, compensated image data based on said image data and said updated compensation table; and

displaying said compensated image data by said display panel by driving said plurality of sub-pixels, including said at least one sub-pixel that is sensed by the current sensor, to emit light in response to said compensated image data, whereby Mura defect is compensated.

11. The method according to claim 10 , wherein the step of updating said compensation table in said memory according to said sensed current comprises: updating said compensation table according to the value of said sensed current and a predetermined relationship.

12. The method according to claim 11 , wherein said predetermined relationship is associated with the color of said sub-pixel.

13. The method according to claim 10 , wherein the step of sensing a current of at least one sub-pixel among said plurality of sub-pixels by said current sensor comprises: sensing a sum of currents of said plurality of pixels, and the step of updating said compensation table in said memory according to said sensed current comprises: updating said compensation table according to said sum of currents.

14. The method according to claim 13 , further comprising: selecting said plurality of sub-pixels to correspond to a pre-determined area of said display panel.

15. The method according to claim 14 , wherein the step of updating said compensation table in said memory according to said sensed current comprises: updating said compensation table according to the value of said sum of currents and a predetermined relationship, and said predetermined relationship is associated with said pre-determined area.

16. The method according to claim 13 , wherein the step of sensing a current of at least one sub-pixel among said plurality of sub-pixels by said current sensor comprises: sensing said sum of currents at cathodes of said plurality of sub-pixels.

17. An OLED display, comprising:

a display panel comprising a plurality of sub-pixels;

a memory storing a compensation table containing information for Mura compensation, wherein said compensation table is initially established based on the characteristic of each sub-pixel and the average luminance of said plurality of sub-pixels; and

a processing circuit, comprising:

a current sensor sensing a sum of currents of a group of sub-pixels among said plurality of sub-pixels, wherein said compensation table is updated according to said sensed current; and

a processor generating compensated image data based on an image data and said updated compensation table;

wherein said display panel displays said compensated image data, by said plurality of sub-pixels including said at least one sub-pixel emitting light in response to said compensated image data, whereby Mura defect is compensated.

18. The OLED display according to claim 1 , wherein the compensation table stored in the memory is established initially based on the luminance or current characteristic in response to a test signal provided to said at least one sub-pixel sensed by the current sensor.

19. The method according to claim 10 , wherein the compensation table is established initially based on the luminance or current characteristic in response to a test signal provided to said at least one sub-pixel sensed by the current sensor.