Method of chroma compensation for pixels and microled display used in the same

Abstract

A pixel color compensation method is provided. The method includes: driving a first pixel, a second pixel, and a third pixel of a display with a micro light-emitting diode to emit light sequentially; measuring a first dominant wavelength of the first pixel, a second dominant wavelength of the second pixel, and a third dominant wavelength of the third pixel in each pixel; and driving the second pixel or the third pixel in each pixel to emit light at a partial brightness to mix with the first pixel in the same pixel emitting light at the first dominant wavelength, wherein the color matching of the mixed light will be manifested as an adjusted first dominant wavelength, the adjusted dominant wavelength approaching a minimum, a maximum, or an average value of the measured first dominant wavelengths.

Claims

1. A pixel color compensation method, comprising: driving a first pixel, a second pixel, and a third pixel of a display of a micro light-emitting diode to emit light sequentially; measuring a first dominant wavelength of the first pixel, a second dominant wavelength of the second pixel, and a third dominant wavelength of the third pixel in each pixel; and driving the second pixel or the third pixel in each pixel to emit light at a partial brightness to mix with the first pixel in the same pixel emitting light at the first dominant wavelength, wherein the color matching of the mixed light will be represented by an adjusted first dominant wavelength, the adjusted first dominant wavelength being close to a minimum, a maximum, or an average value of the measured first dominant wavelengths.

2. The method as described in claim 1, wherein when the first pixel is a red sub-pixel and the second pixel is a green sub-pixel, the red sub-pixel emits red light with a red dominant wavelength, and the green sub-pixel in the same pixel emits green light with a partial brightness and a green dominant wavelength, the color matching of the light after the red light and the green light are mixed will be manifested as an adjusted red dominant wavelength, the adjusted red dominant wavelength approaching the minimum value among the measured first dominant wavelengths.

3. The method as described in claim 1, wherein when the first pixel is a blue subpixel and the second pixel is a green subpixel, the blue subpixel emits blue light with a dominant blue wavelength, and the green subpixel in the same pixel emits green light with a dominant green wavelength at a partial brightness, the color matching of the light after the blue light and the green light are mixed will be manifested as an adjusted dominant blue wavelength, the adjusted dominant blue wavelength approaching the maximum value among the measured first dominant wavelengths.

4. The method as described in claim 1, wherein when the first pixel is a green subpixel, the second pixel is a blue subpixel, and the third pixel is a red subpixel, the green subpixel emits green light with a dominant green wavelength, and the blue subpixel in the same pixel emits blue light with a partial brightness and a dominant blue wavelength, the color matching of the light after the green light and the blue light are mixed will be manifested as an adjusted dominant green wavelength, the adjusted dominant green wavelength being close to the average value of each of the measured first dominant wavelengths.

5. The method as described in claim 1, wherein when the first pixel is a green subpixel, the second pixel is a blue subpixel, and the third pixel is a red subpixel, the green subpixel emits green light with a dominant green wavelength, and the red subpixel in the same pixel emits red light with a partial brightness and a dominant red wavelength, the color matching of the light after the green light and the red light are mixed will be manifested as an adjusted dominant green wavelength, the adjusted dominant green wavelength being close to the average value of each of the measured first dominant wavelengths.

6. A display of a miniature light-emitting diode, comprising: a plurality of pixels, each pixel including a red subpixel, a green subpixel, and a blue subpixel; a storage unit storing a first dominant wavelength of one of the red subpixels, a second dominant wavelength of one of the green subpixels, and a third dominant wavelength of one of the blue subpixels, and storing a maximum first dominant wavelength of the first dominant wavelength, a maximum second dominant wavelength of the second dominant wavelength, and a maximum third dominant wavelength of the third dominant wavelength; and a driving circuit configured to: drive one of the red subpixels, green subpixels, and blue subpixels in each pixel to emit light at full brightness, while simultaneously driving the other one or the other two to emit light at partial brightness, wherein the color matching of the mixed light will be represented by an adjusted dominant wavelength, and the adjusted dominant wavelengths are approximately the same.

7. The display as claimed in claim 6, wherein the red subpixel emits red light at full brightness and has a red light dominant wavelength, and the green subpixel in the same pixel emits green light at partial brightness and has a green light dominant wavelength, wherein the color matching of the light after the red light and the green light are mixed will be manifested as an adjusted red light dominant wavelength, the adjusted red light dominant wavelength approaching a minimum value among the first dominant wavelengths.

8. The display as claimed in claim 6, wherein the blue subpixel emits blue light at full brightness with a dominant blue light wavelength, and the green subpixel in the same pixel emits green light at partial brightness with a dominant green light wavelength, and the color matching of the light after the blue light and the green light are mixed will be manifested as an adjusted dominant blue light wavelength, the adjusted dominant blue light wavelength being close to a maximum value among the third dominant wavelengths.

9. The display as claimed in claim 6, wherein the green subpixel emits green light at full brightness with a dominant green wavelength, and the blue subpixel in the same pixel emits blue light at partial brightness with a dominant blue wavelength, and the color matching of the light after the green light and the blue light are mixed will be manifested as an adjusted dominant green wavelength, the adjusted dominant green wavelength being close to an average value among the second dominant wavelengths.

10. The display as claimed in claim 6, wherein the green subpixel emits green light at full brightness with a dominant green wavelength, and the red subpixel in the same pixel emits red light at partial brightness with a dominant red wavelength, and the color matching of the light after the green light and the red light are mixed will be manifested as an adjusted dominant green wavelength, the adjusted dominant green wavelength being close to an average value among the second dominant wavelengths.

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