摘要 |
A display device is capable of operating in a first mode and is capable of operating in a second mode. The display device includes a first image display unit that includes a photonic crystal layer, the photonic crystal layer being configured to be substantially transparent when the display device operates in the first mode and being configured to display at least an image when the display device operates in the second mode. The display device further includes a second image display unit overlapping the first image display unit and configured to turned on in the first mode to display at least an image and turned off in the second mode.
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