Display apparatus and method of repairing display defect in display panel

A method of repairing a display defect in a display panel, comprising:

• in a module process stage, inputting a first data voltage to each pixel in the display panel, enabling the display panel to display an image to be detected, and acquiring a brightness of each pixel;
• determining a reference pixel and a defect pixel according to the image to be detected;
• calculating a compensation data voltage for the defect pixel according to a brightness difference between the reference pixel and the defect pixel;
• and
• inputting the first data voltage to the reference pixel, and inputting a second data voltage to the defect pixel, according to the compensation data voltage, wherein the second data voltage is a sum of the first data voltage and the compensation data voltage,
• wherein the determining a reference pixel and a defect pixel comprises:
• determining a criterion driving current according to a known normal display panel and a known defect display panel;
• acquiring a current driving current of each pixel, and comparing the current driving current of each pixel with the criterion driving current;
• determining the pixel is as the defect pixel if the current driving current of a pixel is greater than the criterion driving current;
• and
• determining the pixel is as the reference pixel if the current driving current of the pixel is less than or equal to the criterion driving current,
• wherein the determining a criterion driving current comprises:
• acquiring a first driving current of each pixel in the known normal display panel, and recording a maximum value of the first driving current;
• acquiring a second driving current of each pixel in the known defect display panel, and recording a minimum value of the second driving current;
• comparing the maximum value of the first driving current with the minimum value of the second driving current, and
• determining the minimum value of the second driving current as the criterion driving current, if a ratio of the maximum value of the first driving current to the minimum value of the second driving current is greater than a preset value.