OLED display device and pixel repair method thereof

A repair method of an Organic Light-Emitting Diode (OLED) display device, wherein, the OLED display device comprises a pixel, wherein the pixel includes a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel;

• the red sub-pixel includes a first OLED device and a first red filter located on a light outgoing side of the first OLED device;
• the green sub-pixel includes a second OLED device and a first green filter located on a light outgoing side of the second OLED device;
• the blue sub-pixel includes a third OLED device and a first blue filter located on a light outgoing side of the third OLED device;
• and the white sub-pixel includes a fourth OLED device and a second red filter, a second green filter and a second blue filter located on a light outgoing side of the fourth OLED device,
• the repair method comprising:
• in a case that one of the red sub-pixel, the green sub-pixel and the blue sub-pixel has a bright spot defect, making the one of the red sub-pixel, the green sub-pixel and the blue sub-pixel fail to emit light in order to become a dark spot;
• irradiating a region of the white sub-pixel except the light filter with a same color as that of the one of the red sub-pixel, the green sub-pixel and the blue sub-pixel to make an irradiated region of the fourth OLED device deteriorate and not emit light anymore;
• and
• when displaying, during gray scale converting from RGB into RGBW, a gray scale of the one sub-pixel is multiplied by a preset coefficient according to a size of the light filter of the white sub-pixel with the same color as that of the one of the red sub-pixel, the green sub-pixel and the blue sub-pixel, and then written into a gray scale of the white sub-pixel, and gray scales of the others of the red sub-pixel, the green sub-pixel and the blue sub-pixel being not converted.