Display device and display panel, pixel circuit and compensating method thereof

A display panel, comprising:

• a plurality of scan lines, disposed parallel to each other in a first direction;
• at least one redundancy scan line, disposed parallel to the scan lines;
• a plurality of data lines, disposed parallel to each other in a second direction crossing over the redundancy scan line and the scan lines;
• and
• at least one switching circuit, connected between the redundancy scan line and one of the scan lines, wherein when the display panel enters a compensation mode, the switching circuit is turned on;
• wherein a plurality of redundancy pixel circuits are disposed at a plurality of points where the data lines and the redundancy scan line cross over, and a plurality of display pixel circuits are disposed at a plurality of points where the data lines and the scan lines cross over.

A display panel, comprising:

• a plurality of scan lines, disposed parallel to each other in a first direction;
• at least one redundancy scan line, disposed parallel to the scan lines;
• a plurality of data lines, disposed parallel to each other in a second direction crossing over the redundancy scan line and the scan lines;
• and
• a plurality of switching circuits, connected between the redundancy scan line and one of the scan lines respectively, wherein when the display panel enters a compensation mode, the switching circuits are turned on by turns;
• wherein a plurality of redundancy pixel circuits are disposed at a plurality of points where the data lines and the redundancy scan line cross over, and a plurality of display pixel circuits are disposed at a plurality of points where the data lines and the scan lines cross over.

A display device, comprising:

• a display panel, comprising a plurality of display pixel cells and a plurality of redundancy pixel cells;
• a gate driver circuit, connected to the display panel via a plurality of scan lines;
• a source driver circuit, connected to the display panel via a plurality of data lines, wherein a display pixel cell is disposed at a portion of a plurality of points where the data lines and the scan lines cross over, and a plurality of redundancy pixels cell are disposed at another portion of points where the data lines and the scan lines without the display pixel cells cross over;
• a timing control circuit, connected to the gate driver circuit, the source driver circuit and the display panel via at least one redundancy scan line, wherein the redundancy pixel cells are disposed at a plurality of points where the redundancy scan line and the data lines cross over, and wherein when the display device enters a compensation mode, the timing control circuit turns on the redundancy pixel cells and a portion of the display pixel cells to compensate a plurality of currents of the display pixel cells;
• a plurality of current detection circuits, wherein each of the current detection circuits is adopted for detecting one of the redundancy pixel cells and a working current of one of the display pixel cells to be compensated respectively when the display device enters the compensation mode, and a detection result is output to the timing control circuit;
• and
• a programmable voltage generator, connected to the timing control circuit and the source driver circuit, wherein the timing control circuit controls the programmable voltage generator to output a plurality of data voltage signals to the source driver circuit according to the detection result generated from the current detection circuits.

A compensation method of a display device comprising a plurality of pixel cells, and the pixel cells are divided into a plurality of detection regions according to positions of the display cells, the compensation method comprising:

• activating one of the detection regions into a compensation mode;
• comparing a working current of each of the pixel cells in the one of the detection regions entering the compensation mode with a reference current;
• generating a plurality of comparison results;
• and
• correcting a voltage level of a data received by each of the pixel cells in the one of the detection regions entering the compensation mode according to the comparison result.