Fig. 4
From: Full-color laser displays based on organic printed microlaser arrays
Full-color laser display. a Concept for full-color laser display based on programmable excitation. Briefly, a 355 nm pulsed laser is directed into a fast three-dimensional laser scanner, which is controlled so that the laser beam scans the RGB laser pixel array along pre-defined paths. As a result, tunable color images can be achieved through spatially varied optical pumping. b Microscopy images (left column) and photoluminescence images (right three columns) of a RGB pixel array, showing the ability to display multi-color Arabic numbers using the as-developed display panel. The blue, green and red 0, 1, or 2 can be displayed by exciting the corresponding spherical caps along the laser scanning path, that is, the white lines in the left column of the panel in Fig. 4b. All scale bars are 200 μm. c–e Images of 2.2-cm (diagonal) laser display prototypes using an identical full-color panel with a 44 × 44 pixel array. All scale bars are 3 mm
