Laser display with panchromatic range, high brightness, limit hd, true 3D and other disruptive advantages, is the cathode ray display, LCD, LED display after the next generation of technology.
Laser display has been commercialized in laser TV, laser cinema and other fields.
However, the use of the projection of a three-color laser limited the laser display in mobile phones and other tablet applications.
It is the key to develop flat-panel laser display that the micro-nano laser with red, green and blue colors is used as a single pixel and the panchromatic laser array with active luminescence is used as the display panel.
In the national natural science foundation, ministry of science and technology and strategy of the Chinese academy of sciences the forerunner of the special support, a researcher at the Chinese academy of sciences laboratory of photochemistry yong-sheng zhao group researchers for many years has been committed to organic micronano laser materials and device research, in organic micro-nano cavity structure of controllable assembly (j. Am. Chem. Soc., 2011, 133, 7276-7279;
Chem. Soc. Rev.2014, 43, 4325-4340), excited state process of organic micro-nano laser materials (Acc. Chem. Res. 2016, 49, 1691-1700;
J. Am. Chem. Soc. 2016, 138, 1118-1121;
Ed. 2018, 57, 3108-3112;
J. Am. Chem. Soc. 2018, 140, 13147-13150), and organic flexible micro-nano laser array (j. Am. Chem. Soc.2015, 137, 62-65;
Science Advances2015, 1, e1500257;
J. Am. Chem. Soc.2016, 138, 2122-2125;
Science Advances2017, 3, e1700225) carried out systematic research work.
Recently, researchers give full play to the advantages of organic materials in solution processing aspect, use inkjet printing precision is constructed of red, green and blue micronano laser array as a display panel (figure 1), realized the active light emitting laser display, solve the current laser projection display cannot be used in mobile phones, tablet, wearable devices, etc.
On the fabricated panel, each pixel consists of three separate red, green and blue lasers.
The far-field image shows that the pixels prepared in this way have a good color mixing effect, and the color gamut coverage exceeds 45% of the standard RGB space (figure 2).
In a 3 x 5 array panel to achieve the digital display of the primary colors, through the color mix can be obtained other colors.
In addition to Numbers, the panel can also achieve a mixed color display of all letters.
Furthermore, a larger array panel is selected to dynamically display more complex patterns.
The active luminous laser panel can also realize the dynamic display of patterns for information rolling broadcast, video broadcast and so on.
This work provides a feasible solution for the development of high performance and easily machined flat panel laser display and lighting devices.
The related work was published in Nature Communications2019, 10, 870.