Electronic displays using optically pumped luminescent semiconductor nanocrystals
View Patent ↗A multicolor electronic display is based on an array of luminescent semiconductor nanocrystals. Nanocrystals which emit light of different colors are grouped into pixels. The nanocrystals are optically pumped to produce a multicolor display. Different sized nanocrystals are used to produce the different colors. A variety of pixel addressing systems can be used.
1. A multicolor display apparatus, comprising:
a pixel array of semiconductor nanocrystals comprising a plurality of pixels of different colors, wherein the sizes of the nanocrystals in each of the plurality of pixels determine the colors; and
a pixel addressing system operatively associated with the pixel array for selectively optically exciting the nanocrystals to produce a luminescent color pattern of pixels.
2. The apparatus of claim 1 wherein the pixel addressing system further comprises:
a liquid crystal modulator positioned adjacent to the pixel array.
3. The apparatus of claim 2 further comprising an analyzer between the pixel array and the liquid crystal modulator.
4. The apparatus of claim 1 wherein the pixels are configured to produce red, green, and blue light.
5. The apparatus of claim 1 further comprising a glass substrate adjacent to the pixel array.
6. The apparatus of claim 1 further comprising a long pass filter adjacent to the pixel array.
7. The apparatus of claim 1 wherein the semiconductor nanocrystals comprise core-shell nanocrystals.