Multicolor OLED displays
View Patent ↗An OLED display having at least first, second, and third differently colored pixels includes a first light emitting layer provided over a substrate for the first and second pixels and a second light emitting layer provided over the substrate for the third pixel wherein the first and second light emitting layers produce light having different spectra and the light produced by the first light emitting layer has substantial spectral components corresponding to the light output desired for the first and second pixels, and the light produced by the second light emitting layer has substantial spectral components corresponding to the light output desired for the third pixel, and first and second color filters in operative relationship with the first and second pixels.
1. An OLED display having at least first, second, and third differently colored pixels, comprising:
a) a first light emitting layer continuously provided over a substrate for the first and second pixels and not extending over the third pixel and a second light emitting layer provided over the substrate for the third pixel wherein the first and second light emitting layers produce light having different spectra and the light produced by the first light emitting layer has substantial spectral components corresponding to the light output desired for the first and second pixels, and the light produced by the second light emitting layer has substantial spectral components corresponding to the light output desired for the third pixel;
b) first and second color filters in operative relationship with the first and second pixels; and
c) wherein the light spectrum produced by the first light emitting layer has substantial spectral components corresponding to yellow-orange light, and wherein the light spectrum produced by the second light emitting layer has substantial spectral components corresponding to blue light.
2. The OLED display according to claim 1 wherein no color filter is provided corresponding to the third pixel.
3. The OLED display according to claim 1 wherein the first color filter passes red light and absorbs light of other colors, and the second color filter passes green light and absorbs light of other colors.
4. An OLED display having at least first, second, and third differently colored pixels, comprising:
a) a first light emitting layer continuously provided over a substrate for the first and second pixels and not extending over the third pixel and a second light emitting layer provided over the substrate for the third pixel wherein the first and second light emitting layers produce light having different spectra and the light produced by the first light emitting layer has substantial spectral components corresponding to the light output desired for the first and second pixels, and the light produced by the second light emitting layer has substantial spectral components corresponding to the light output desired for the third pixel;
b) first and second color filters in operative relationship with the first and second pixels; and
c) wherein the light spectrum produced by the first light emitting layer has substantial spectral components corresponding to blue-green light and wherein the light spectrum produced by the second light emitting layer has substantial spectral components corresponding to red light.
5. The OLED display according to claim 4 wherein the first color filter passes blue light and absorbs light of other colors, and the second color filter passes green light and absorbs light of other colors.
6. The OLED display according to claim 4 wherein the second light emitting layer is provided over the substrate for a fourth pixel, and a third color filter is provided in operative relationship to the third pixel wherein the light produced by the second light emitting layer has substantial spectral components corresponding to the light output desired for the third and fourth pixels.
7. The OLED display according to claim 6 wherein the third color filter passes red light and absorbs light of other colors.
8. An OLED display having at least first, second, and third differently colored pixels, comprising:
a) a first light emitting layer continuously provided over a substrate for the first and second pixels and not extending over the third pixel and a second light emitting layer provided over the substrate for the third pixel wherein the first and second light emitting layers produce light having different spectra and the light produced by the first light emitting layer has substantial spectral components corresponding to the light output desired for the first and second pixels, and the light produced by the second light emitting layer has substantial spectral components corresponding to the light output desired for the third pixel;
b) first and second color filters in operative relationship with the first and second pixels; and
c) further including a fourth pixel such that the first and second light emitting layers overlap to produce light having a spectrum different than the first, second, and third pixels, and wherein the light produced by overlapping the first and second light emitting layers has substantial spectral components corresponding to the light output desired for the fourth pixel.
9. The OLED display according to claim 8 wherein the light spectrum produced by the first light emitting layer has substantial spectral components corresponding to yellow-orange light, and wherein the light spectrum produced by the second light emitting layer has substantial spectral components corresponding to blue light.
10. The OLED display according to claim 8 wherein the first color filter passes red light and absorbs light of other colors, and the second color filter passes green light and absorbs light of other colors.
11. The OLED display according to claim 8 wherein the light spectrum produced by overlapping the first and second light emitting layers has substantial spectral components corresponding to broadband white light.
12. The OLED display according to claim 8 wherein the fourth pixel is disposed adjacent to the second and third pixels, or wherein the fourth pixel is disposed adjacent to the first and third pixels.
13. The OLED display according to claim 8 wherein the first light emitting layer is continuous between the first, second, and fourth pixels, and the second light emitting layer is continuous between the third and fourth pixels.
14. An OLED display having at least first, second, and third differently colored pixels, comprising:
a) a first light emitting layer continuously provided over a substrate for the first and second pixels and not extending over the third pixel and a second light emitting layer provided over the substrate for the third pixel wherein the first and second light emitting layers produce light having different spectra and the light produced by the first light emitting layer has substantial spectral components corresponding to the light output desired for the first and second pixels, and the light produced by the second light emitting layer has substantial spectral components corresponding to the light output desired for the third pixel;
b) first and second color filters in operative relationship with the first and second pixels; and
c) wherein the second light emitting layer is provided over the substrate for a fourth pixel, and a third color filter provided in operative relationship to the third pixel wherein the light produced by the second light emitting layer has substantial spectral components corresponding to the light output desired for the third and fourth pixels.
15. The OLED display according to claim 14 wherein the light spectrum produced by the first light emitting layer has substantial spectral components corresponding to yellow-orange light and wherein the light spectrum produced by the second light emitting layer has substantial spectral components corresponding to blue-green light.
16. The OLED display according to claim 14 wherein the third color filter passes blue light and absorbs light of other colors.