Method for measuring luminance of light-emitting display panel

摘要

Disclosed is a method for measuring luminance of each of entire pixels two-dimensionally arranged in a light-emitting display panel at regular intervals, using an image sensor in which light receiving elements are two-dimensionally arranged at regular intervals, the method including: providing an optical lens between the light-emitting display panel and the image sensor, and adjusting distances between the light-emitting display panel, the image sensor, and the optical lens by setting intervals of images of the entire pixels to be N times as large as intervals of the light receiving pixels, where N is a natural number, the images being to be formed on a light receiving surface of the image sensor through the optical lens; displaying, on the light-emitting display panel, a display pattern in which predetermined pixels from among the entire pixels produce a luminescence; and measuring the luminance of the predetermined pixels, using the light receiving elements.

主权项

1. A method of measuring luminance of each of entire pixels two-dimensionally arranged in a light-emitting display panel at regular intervals, using an image sensor in which light receiving elements are two-dimensionally arranged at regular intervals, the method comprising:
adjusting physical distances between the light-emitting display panel, the image sensor, and an optical lens, which is provided between the light-emitting display panel and the image sensor, by setting intervals of images of the entire pixels to be N times as large as intervals of the light receiving pixels, where N is a natural number, the images formed on a light receiving surface of the image sensor through the optical lens; displaying, on the light-emitting display panel, a display pattern in which predetermined pixels from the entire pixels produce a luminescence; and measuring the luminance of the predetermined pixels that produce the luminescence, using the light receiving elements, wherein, in the adjusting of the physical distances between the light-emitting display panel, the image sensor, and the optical lens, in response to moire observed in a captured image, magnification is changed by physically changing at least a position of the optical lens by a zoom mechanism to adjust the physical distances between the light-emitting display panel, the image sensor, and the optical lens until moire is not observed, in the displaying, the display pattern is a display pattern in which the predetermined pixels produce the luminescence and at least one of the entire pixels adjacent to the predetermined pixels does not produce a luminescence, and in the measuring, the luminance of each of the predetermined pixels is measured using (2N)2 light receiving elements included in the light receiving elements.