Granted Patent B2

US 9,322,707 · App. 13/688,352 · Granted Apr 26, 2016

Abstract

Claims (44)

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.

2. The method according to claim 1 ,

wherein the entire pixels are arranged in a matrix in the light-emitting display panel, and

only one of four pixels included in the entire pixels produces a luminescence in the display pattern, the four pixels being a first pixel arranged in an odd-numbered row and an odd-numbered column, a second pixel arranged in an even-numbered row and an odd-numbered column, a third pixel arranged in an odd-numbered row and an even-numbered column, and a fourth pixel arranged in an even-numbered row and an even-numbered column.

3. The method according to claim 1 ,

wherein the entire pixels are arranged in a matrix in the light-emitting display panel, and

only one of two pixels included in the entire pixels produces a luminescence in the display pattern, the two pixels being a first pixel arranged in an odd-numbered row and a second pixel arranged in an even-numbered row.

4. The method according to claim 1 ,

wherein the entire pixels are arranged in a matrix in the light-emitting display panel, and

only one of two pixels included in the entire pixels produces a luminescence in the display pattern, the two pixels being a first pixel arranged in an odd-numbered row and an odd-numbered column or an even-numbered row and an even-numbered column, and a second pixel arranged in an even-numbered row and an odd-numbered column or an odd-numbered row and an even-numbered column.

5. The method according to claim 1 ,

wherein the entire pixels are arranged in a matrix in the light-emitting display panel, and

only one of two pixels included in the entire pixels produces a luminescence in the display pattern, the two pixels being a first pixel arranged in an odd-numbered column and a second pixel arranged in an even-numbered column.

6. The method according to claim 1 ,

wherein N is one of 2, 3, and 4.

7. The method according to claim 1 ,

wherein each of the entire pixels includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and

in the displaying, one of the red sub-pixel, the green sub-pixel, and the blue sub-pixel produces a luminescence.

8. The method according to claim 1 ,

wherein the image sensor is a charge-coupled device.

9. The method according to claim 8 ,

wherein the image sensor has an aperture ratio of 20% or higher and lower than 100%.

10. The method according to claim 1 ,

wherein the entire pixels include an organic electroluminescence (EL) element.

11. 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, and

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.

12. 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, the adjusting of the physical distances between the light-emitting display panel, the image sensor, and the optical lens, comprises:

coarsely adjusting the intervals of the images of the pixels to be approximately N times as large as the intervals of the light receiving pixels; and

after the coarse adjusting, finely adjusting the intervals of the images of the pixels 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, and

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.

Assignments (6)